with the increasing load of electricity, saving electricity has attracted more attention. The ice storage air conditioning system adopted by Yunqi Holiday Hotel in Hua Ting, Hangzhou, can reasonably avoid the peak of electricity consumption during the day, make use of ice to store cold at the low point of electricity consumption at night, and release cold energy during the day, thus effectively playing the role of "peak shaving and valley filling" in the power grid.
for hotels, the time-of-use electricity price policy can be used to greatly save operating expenses. Ice storage air conditioning system uses less or no electricity when the electricity price is high, and releases the stored cold energy for use, but uses more electricity when the electricity price is low, and stores the produced cold energy. As the peak-to-valley ratio of electricity price in Hangzhou reaches 2: 1, the annual saving of operating electricity fee is considerable. In addition, at the peak of air-conditioning load, it is necessary to rely on melting ice for cooling operation, so the installed refrigeration capacity of air-conditioning host can be reduced, and the installed capacity and investment of corresponding equipment such as cooling tower and circulating water pump will also be reduced, and the initial investment cost of electricity can also be reduced. Therefore, the application of ice storage air conditioning can be described as a double harvest of economic and social benefits.
With the maturity of ice storage technology, it is possible to supply air at low temperature. Low-temperature air supply can reduce the humidity of indoor air and make people feel fresh. Under the premise of satisfying human comfort, the indoor air temperature can be appropriately increased, so that when guests walk out of an air-conditioned room, they can quickly adapt to the changes of outdoor temperature without feeling too much discomfort, and prevent air-conditioning diseases. At the same time, low-temperature air supply can prevent the growth of bacteria, which is beneficial to the health of hotel guests.
In Hua Ting Yunqi Resort Hotel, their reclaimed water treatment system attracted our attention.
the so-called reclaimed water reuse means that the waste water is treated by the sewage treatment system, and then advanced treatment, such as coagulation, sedimentation, filtration, biochemical degradation, sterilization and other links, to meet the reuse requirements. The reclaimed water is between "water supply" and "water supply". Although it is inedible, it fully meets the requirements of greening and other aspects. The water consumption of the hotel is very large, about 611 tons of waste sewage is produced every day. After treatment and reuse, it can be used for greening irrigation, landscape fountain, toilet flushing, car washing and so on.
At present, there are many domestic sewage treatment processes, and Hua Ting Yunqi Resort Hotel adopts hydrolysis-aerobic process. The characteristics of this process are as follows: firstly, the hydrolysis tank replaces the traditional primary sedimentation tank, and more importantly, after hydrolysis treatment, the organic matter in the sewage not only changes in quantity, but also changes in physical and chemical properties, making the sewage more suitable for subsequent aerobic treatment, and can be purified in a short retention time with less gas. Secondly, this process completes the treatment of sludge while treating sewage, which makes the treatment of sewage and sludge unified and can cancel the digester from the traditional process. This is not only reliable in process operation, but also stable in emission indicators, with low investment and operating cost, and can know various human factors. Thirdly, the volume of the aeration tank and the amount of aeration decreased significantly.
after the hotel adopts this system, it not only saves considerable water and sewage charges every year, but also has immeasurable social benefits.
Ningbo Xinzhou Hotel
New management system of energy saving and consumption reduction
Ningbo Xinzhou Hotel pays more and more attention to energy saving, closely combines the importance of energy saving and consumption reduction with maintaining the competitive advantage of enterprises from the perspective of sustainable development, and establishes and improves the management system of energy saving and consumption reduction with "management supervision and everyone's participation". The engineering department directly participates in energy management, formulates energy-saving plans, arranges daily inspections, etc., and takes "diligent inspection, grasping implementation and eliminating hidden dangers" as the working purpose and implements them one by one. Employees in each shift are required to realize that energy saving is not at the expense of service quality, and the quality of customer service should not be reduced and service standards should not be affected. In recent years, the basic energy consumption of hotels has not increased because of the aging of equipment and the decline of performance, but has been decreasing year by year.
hotel energy saving is a regular work with great potential. Energy saving is mainly achieved by strengthening management. Energy saving must not affect the quality of customer service or reduce the comfort of customers. Therefore, the managers and supervisors of the engineering department often deeply analyze the energy consumption situation in each region, identify the weak links, formulate practical work measures, compare the consumption of electricity, oil and steam (liquefied gas, steam and refrigerant) in each region at each stage through testing, conduct patrol inspection regardless of time period, observe the air conditioning operation situation in each region, observe the light source lighting and whether there is any "running, dripping, leaking and leaking" phenomenon of oil, water and steam. Through careful analysis and calculation, the engineering department found that the full-load running time of central air conditioning is less than 1/2 in the whole year, and even in the season with the largest air conditioning load in summer, the load in the latter half of the night and the early morning is relatively small. Focus on the technical transformation of the frequency conversion system of the refrigerant pump of the central air conditioner, which saves electricity obviously and has stable refrigeration. At the same time, it is emphasized that the temperature of the lobby area of the duty personnel in the air-conditioning machine room should be detected regularly: firstly, it should be ensured to run, and the ambient temperature in the public area should be guaranteed to reach the four-star requirement by starting the machine; then, it should work hard in the operation: the corresponding outlet water temperature should be controlled and adjusted according to the weather conditions and environmental temperature changes every day, and the monitoring of the ambient temperature should be strengthened. Fresh air is used in the breakfast area, because the outdoor temperature is suitable during this period, and the air in the restaurant can be kept fresh; Reasonably close the air conditioning refrigerant water valves in some unnecessary areas or adjust the size of the valves. In the backstage administrative area, the temperature in the employee area is suitable, and if the air conditioner can be turned off, try not to turn it on. Strengthen the control of air conditioning in the meeting room. About half an hour before the meeting, the engineering department will turn on the control switch. The engineering department also only provided ventilation for the banquet hall during the meal preparation, turned on the air conditioner at 15 minutes before the banquet to ensure the requirements of the guests, stopped using it after the meal, and overhauled the air conditioner, refrigerator, freezer and refrigerator thermostat in the guest room and public area. Maintain and clean the air-conditioning motor, insulation layer, fan blades, radiator fins, pipes, return air filters, etc., to create a warm and comfortable environment for guests. It is also stipulated that the consumption of water, electricity, gas and fuel oil should be recorded regularly every day to accumulate data, so that it is easy to find abnormal consumption and find out the reasons.
in addition to maintaining the power distribution system, the engineering department adjusts the system capacitance compensation at any time to make the power distribution system more rational. Frequency conversion devices are used for high-power mechanical and electrical equipment, and sub-meters, sub-meters and other metering devices are installed where separate assessment is required. Install intelligent clock-controlled electrical devices for outdoor landscape lights and decorative lighting systems of main and auxiliary buildings. Actively carry out water-saving projects, focus on the inspection of large water users such as catering kitchens, laundry rooms and staff quarters, and eliminate the phenomenon of long running water. Cooperate with the administrative office to do a good job in energy-saving publicity, create a good atmosphere for everyone to save energy, and achieve the good habit of turning off the lights when people walk, turning off the water when people walk, and stopping the air conditioner. At the same time, the department pays attention to the daily energy consumption changes, finds out the reasons in time, eliminates the blind spot of energy saving and puts an end to hidden waste. Under the premise of not reducing the lighting, the backstage administrative area and employee area should use natural light as much as possible to reduce the lighting electricity consumption. In key areas, light sources and high-efficiency lamps with high light efficiency and good color rendering are given priority, and the lighting system in the staff area is reformed. The staff passage in the main and auxiliary buildings adopts inductive switches. Adjust the flow of tap water in the employee area to half of the normal situation to reduce unnecessary water loss. Replace and install steam and water saving valves in kitchen and laundry room. Do a good job in the operation and maintenance of all steam pipes, valves, pressure reducing valves, steam traps and other above-mentioned equipment in the boiler room. For domestic hot water, it should be adjusted with the change of outdoor temperature, and the temperature of hot water should be selected reasonably to ensure the integrity of pipeline insulation layer. Check frequently, carefully check whether the equipment and facilities in each area are abnormal, listen to whether the equipment is abnormal, often touch the temperature, vibration and smell of the equipment, ensure that the equipment problems can be found and solved in time, so as not to cause great losses, and strive to make the work of energy saving and consumption reduction more detailed and comprehensive.
Hangzhou Zhijiang Hotel
Greening activities are further deepened
Engineering Department: At the beginning of May, a cooling water pump was replaced by GO．WELL energy-saving pump, which can save electricity by 8 degrees per hour. In mid-May, experts from the Energy Conservation Research Center of the Provincial Economic and Trade Commission were invited to evaluate and measure the overall electricity consumption of the hotel, and put forward a rectification plan for energy saving. Continue to promote the use of J-Saver electrical appliances in the main building above 19F, and the installation rate has been completed above 91%. Organize the technical backbone to study and discuss the water treatment problem of air conditioning system and the influence of pipeline heat transfer on energy consumption.
housekeeping department: carry out "green housekeeping" activities, advocate green consumption, and provide room service products that meet the requirements of safety, health and environmental protection for in-house guests. The implemented measures are as follows: 1. Strictly control the proportion and dosage of cleaning agent, and pay attention to saving; 2. Control the consumption of public health consumables in the lobby according to the passenger flow, and do not blindly use them; 3, make full use of recyclable items, and the implementation of special custody, control the dosage; 4. Employees go up and down without taking the elevator to save electricity and reduce equipment loss; 5. Discarded batteries are exchanged for new ones, and the house delivery center handles them uniformly; 6. Add water in the guest room pipeline in time to prevent odor; 7. Formulate measures to eliminate the smell of smoke in guest rooms; 8. Establish a sound fresh air supply control system and operation records to improve indoor air quality. The 26th floor is set up as a smoke-free floor, signs of No smoking floor and No smoking room are made, cleaning operation procedures for smoke-free floors are formulated, and on-the-job training is given to waiters.
f&b department: focus on cost saving, and carry out a big discussion on "reasonable purchase and reduction of inventory". Strengthen the communication and contact between the front and back office, reasonably purchase goods according to the actual food demand and quality standards, and focus on the choice of green food. Each team in the kitchen on the second floor will use the fish bones, fish heads and fish tails as raw materials for cooking soup. Prepare materials strictly according to the number of people eating, to prevent waste of raw materials. The dishes saved in the conference buffet are used as staff meals to avoid waste. The staff of the vegetable washing class strengthened the management of water conservation.
finance department: ensure the green procurement, strictly review the system of purchasing and receiving, and control the operating expenses. Make a detailed account and provide accurate data comparison and analysis. All the infrastructure materials for the hotel's own decoration and contracted parts decoration are environmentally friendly, and the material suppliers are required to provide environmental protection signs, including plywood, joinery board and paint.
other departments: actively carry out various forms of "creating green" activities training and education. Turn off the lights and water at will, try not to use air conditioning, implement paperless office, and advocate energy saving and consumption reduction at all times, everywhere and everywhere.
Xiangyi Hotel in Hangzhou
The rhyme of saving is sweeter
Since its opening seven years ago, Xiangyi Hotel in Hangzhou has seen an increase in revenue, but the total annual energy consumption of electricity, oil and water has not increased much. In 2114, electricity was saved by 321,111 kwh, oil by 119 tons and water by 19,111 kwh, and the total cost was saved by more than 611,111 yuan.
first, introduce ISO14111 environmental certification, connect with international standards, and improve the standards and norms of energy conservation for enterprises.
as early as April, 2111, Xiangyi actively strived to introduce the international ISO14111 environmental management quality system as a pilot unit in Hangzhou. At that time, the environmental policy established by Xiangyi was clearly put forward as: "save energy, reuse, reduce pollution, add green and fragrance, and spring is full of fragrance." By establishing the overall goal and formulating specific measures to achieve the goal, the management responsibilities of each department are clarified, a set of relevant documented management procedures and operation standards are formulated, and the whole process of operation is effectively controlled, so that various environmental factors are effectively controlled and managed, and important posts are ensured to operate according to the documents, and more complete prevention and emergency response measures are established. During the operation of the system, relevant activities were inspected, major environmental impacts and equipment operation were monitored, the completion of environmental performance and objectives was supervised, and relevant records were established for traceability. An internal review was held to understand the operation of the system, verify the applicability, adequacy and effectiveness of the system, and make timely revisions. On the basis of two internal audits, a management review meeting was held and a certificate was obtained through certification.
The certification results show that since the introduction of ISO14111 management system, the consumption of water, electricity and raw materials in the year after the hotel passed the certification has saved nearly 241,111 yuan, and the consumption of low-value consumables has saved nearly 61,111 yuan. At the same time, according to the requirements of environmental management, the noise reduction facilities have been reformed four times for the key parts that affect the environment, such as boiler room and air conditioning exhaust outlet in basement, which has reached the satisfactory requirements of environmental monitoring. Hotel sewage and waste gas treatment facilities are complete, and water pollutants and waste gas pollutants meet the national emission standards every year after being tested by environmental protection departments, and the treatment facilities are complete and effective. The boundary noise meets the standard of environmental noise use area. At that time, Xiangyi, as the only hotel representative, made an experience introduction at the Hangzhou Environmental Management System Working Conference. The hotel not only achieved good environmental performance and reduced operating costs, but also greatly improved the environmental awareness and work quality of employees, established a good social image and enhanced market competitiveness.
second, to create a green hotel, advocate green consumption and green sustainable development, and improve the energy-saving effect of the hotel.
Xiangyi has been actively involved in the green hotel certification activity initiated by Zhejiang Province since the end of 1999. Xiangyi has continuously deepened the green management concept and management, improved the green service measures and established the green brand image of Xiangyi Hotel. Carry out the Notice of Zhejiang Tourism Bureau on Carrying out the Certification of Green Hotels in Zhejiang Province and the local standard of green hotels in Zhejiang Province (DB33/T3262111) "Detailed Rules for the Certification of Green Hotels", and constantly do a good job in energy-saving management, environmental protection, reducing material consumption, providing green products and social and environmental economic benefits. In 2113, it won the title of "Green Hotel" in Zhejiang Province with high scores, and at the same time effectively promoted the development of hotel energy conservation and various work. In energy-saving management, the hotel has established a classified account of energy-consuming equipment and an account of energy-consuming metering instruments, and installed water, electricity and steam metering instruments in places that can be managed by districts. For the energy consumption of water, electricity and steam, there is a monthly report on the comparison, analysis and suggestion of energy consumption between the hotel and various departments, and the management departments such as catering, guest room and recreation department have energy consumption quota, assessment system and reward and punishment methods. Reduce material consumption. The guest room reduces the consumption of disposable articles. Reduce disposable packaging supplies. According to the large amount of office paper and daily copying in the hotel, on the one hand, the hotel developed the office OA system, on the other hand, it adopted the form of system, required double-sided copying of documents and materials, and issued it to clerks of various departments for implementation. It also suggested that guests adopt double-sided copying by explaining the copying of customer service, which played a positive role. For a large amount of detergent, on the one hand, the hotel establishes a good working system of proportioning and collecting, and controls the consumption by changing empty cans, on the other hand, it recycles toothpaste and soap. Measures have also been taken to control the common spare parts in the office supplies engineering department, so as to reduce the consumption and save costs.
third, science and technology save energy, scientific saving, and appropriate advanced technology and equipment make a qualitative leap in energy saving.
Xiangyi actively explores new modes in energy conservation. Energy conservation and consumption reduction require benefits from "running, running, dripping and leaking" to management, and to use the latest technology to require benefits from technology. Xiangyi not only establishes and improves the rules and regulations on environmental protection, energy saving and consumption reduction, but also strengthens energy saving management. Work hard on the three blocks of energy consumption in the hotel: electricity, oil and water. The hotel has established various accounts of energy consumption equipment, and added water, electricity and steam metering sub-meters.