Ice storage technology and water source heat pump combination

Abstract: Ice storage and water source heat pump are two completely different technologies. If the two technologies are combined together, they will bring more energy-saving benefits. This paper introduces the application of ice storage technology and water source pump technology in Beijing Tianchuang Creation Project. Keywords: Ice storage water source heat pump Energy saving Ice storage and water source heat pump technology originated in Europe and the United States and other developed countries, ice storage technology is mainly in order to balance the power grid day and night peak and valley difference, during the night time of low power storage ice storage equipment, During the peak hours of daylight, releasing the cold storage capacity and reducing the power consumption of refrigeration equipment during peak hours is the best way for the power sector to "cut the peak and fill the valley." Since the 90s of last century, China started to promote this technology. At present, some completed projects have been completed. Due to the power part of the implementation of the power peak-valley spread, allowing users to get a certain amount of operating costs. Due to the increasing peak-valley difference in China's power grid, the peak-valley difference in North China has reached 40%, and there is a tendency to further increase. As a result, the management of power load side is also increasingly difficult. In recent years, this situation is particularly prominent in the hot summer months of late July and early August. In order to solve this problem, it is imperative to promote ice storage technology vigorously. Water source heat pump technology is a renewable energy development and utilization technology that can move low-level energy to high-energy technologies. It can make full use of renewable energy in nature such as groundwater, geothermal water, soil, rivers and lakes, industrial waste water, etc. A large amount of stored low energy is converted to high energy by a small amount of electric energy for us to use, and its energy conversion ratio can reach 4: 1, which means that 1KW of electric energy can generate 4KW of heat, and the other 3KW of heat comes from Free energy. The use of water source heat pump technology, users can greatly reduce the cost of energy use, but also a substantial replacement of coal-fired boilers, to solve the environmental pressure. In the past few decades, these two technologies have been thriving and have been widely applied in Europe, the United States and other countries. In recent years, our country has also developed rapidly and is in the ascendant. However, these two relatively independent technologies have their own limitations. Ice storage technology can only be applied to the summer air-conditioning season, which can be used to reduce the peak load. However, ice storage technology can not provide winter heating, which is powerless to users who have heating needs. Similarly, water-source heat pump technology can provide both winter heating and summer cooling, but it can not accumulate cold during nighttime power-down periods, so as to achieve the effect of cutting peak and filling the valley. For ordinary buildings, especially large commercial buildings, the cooling load is often greater than the heating load, and a combination of these two technologies, you can use water source heat pump technology to meet both cooling and heating needs, but also the use of ice storage technology for power grid Clipping peak filling. Even if users use cheap heating methods, but also solve the pollution problem, but also made a contribution to the power grid day and night, can serve multiple purposes. In drawing a large number of foreign advanced technology at the same time, China's first water source heat pump and ice storage technology combined project ---- Genesis edge has been in September 2002 in Beijing successfully completed. The success of Sky Genesis symbolizes that the two technologies have been successfully grafted together and is the first joint operation system in China. It has played an important exemplary role in the blue sky project of the capital and the load side management of North China Power Grid. Day Innocence Datun Road, Chaoyang District, Beijing, a total construction area of ​​170,000 m2, of which the building at the end of a large commercial infrastructure, air conditioning area of ​​40,000 m2, the need to install central air conditioning system to meet the summer cooling and winter heating requirements, The use of water source heat pump and ice storage technology, you can meet the above requirements, but also allows the entire air-conditioning system to maximize energy and operating costs savings. Days Genocidal summer air conditioning maximum design cooling load of 6050KW, winter air conditioning maximum design heat load of 4000KW. The system first considers the use of constant-temperature groundwater from mining aquifers to cool the condensing ends of water-to-water heat pump units in the summer and cooling through water-to-water heat pump units. In the meantime, low temperature heat source can be provided by the constant temperature of groundwater in the underground aquifer in winter, and then the water heat pump equipment can be elevated to high energy for heating. In winter, due to the use of a large amount of free energy in groundwater, operating costs are greatly reduced. In addition, according to the characteristics of day genocidal summer cooling load, the summer cooling load is much larger than that of winter heating load. Therefore, if water-heat pump system is used alone, the amount of groundwater needed will be large, and 11 water source wells , 5 pumping 7 recharge, it is subject to specific drilling conditions. Taking into account the nature of the business at Tin Chi Mansion, air conditioning is not required during the post-night electricity downturn. Considering the ice-storage air conditioning scheme, the system utilizes night trough power storage for cold storage. During peak daytime hours, the required cooling capacity Co-operation with water-heat heat pump units to provide cooling capacity to the end of air conditioning. Making groundwater evenly distributed and used throughout the day. Therefore, it is only necessary to drill seven water wells and three pumping wells, greatly saving the amount of wells drilled. In the meantime, summer operating costs have also been significantly reduced due to the extensive use of late-night trough electricity instead of electricity consumption during peak daytime hours. The technology takes full advantage of the constant, renewable energy of groundwater and provides two functions of heating in winter and cooling in summer through the clean power of electricity. The well water after being used is fully recharged back to the ground without pollution to well water and no waste. The entire water source heat pump and ice storage air conditioning system in winter maximum power consumption of 1407KW, to meet the needs of winter heating; Summer day maximum power consumption of 1125KW, night maximum power consumption of 815KW. Day ice storage system enabled, to meet the needs of daytime air conditioning, the entire system obvious peak load effect. The 24-hour load curve of summer buildings is as follows: According to the 24-hour summer air-conditioning load of Beijing Tian Chong Yuan, the water source heat pump and ice storage air-conditioning scheme are adopted in summer. Six 580kw water-source heat pump mainframes , Return water conditions 6.8 / 10.5 ℃, and then by the ice storage equipment to 4 ℃, air conditioning system for the return water temperature of 7/12 ℃), night ice storage, day and ice storage equipment co-cooling. Calculated by the selection of storage system software, the best system configuration of the project, the system energy distribution is as follows: * Six sets of three conditions water source heat pump host daytime air conditioning conditions Maximum energy output: 3480 kw * Water source heat pump mainframe Night ice condition Energy output: 2262kw * Available cold storage capacity at night: 18096 kwh * Storage capacity: 2570 kw * Cold storage equipment cooling Peak load: 42.5% Water water heat pump and ice storage summer air conditioning system operation strategy is as follows: 8:00 - 22:00: Liupanshui heat pump air conditioning conditions running. 8:00 - 20:00: Ice storage equipment ice output, combined with the water source heat pump cooling. 23:00 - 7:00: water source heat pump ice machine operating conditions, storage capacity of ice storage equipment 8 hours. Six water source heat pump cooling water source provided by the groundwater, cooling towers can be replaced. The strategy of using water-heat pump and ice-storage winter air-conditioning system is as follows: The six water-source heat pump units operate in combination with free natural renewable energy provided by groundwater to extract the heat and supply the entire building for heating. The heat is 4200kw. According to the design of the scheme, six sets of water-heat pump units are selected, and a total of 330m3 / h of groundwater at 15 ℃ is required. In summer, the water supply is the cooling water source, and the maximum recharge temperature of groundwater is 15-26.3 ℃. 15-7.2 ° C. Therefore, we need to make 3 wells, 4 wells for recharge, and the total water output is 330m3 / h. The system overall investment of 10.13 million yuan, compared with the conventional refrigeration system, an increase of about 560,000 investment, a total of drilling wells 7, and can meet the needs of winter and summer. The following is a comparison of investment table: ice storage and water source heat pump system and the main equipment investment drilling equipment table Model Number of manufacturers Power consumption (KW) Unit price (ten thousand) Total price (ten thousand) Three working condition host LWP1800 France CIAT 6 175 * 6 ¥ 55.0 / set ¥ 330.0 cold storage ball STL-AC00 France CIAT 330 m3 .gunsq1 li {display: block; float: left; width: 200px; overflow: hidden; 】 Bearing Parts 【Purchase】 Air Lock Valve 【Purchase】 Signal Amplifier 【Purchase】 Valve 【Purchase】 Centrifugal Pump 【Purchase】 Vertical Multistage Pump 【Purchase】 Cylinder 【Purchase】 Speed ​​Control Variable Frequency Motor Prev: Analysis of water source heat pump unit Some of the shortcomings Next: The replacement pump farmer Ma Zeng wins the international gold medal var cpro_id = "u2852961"; Special recommended resistance Chi single screw pump advantages and main purposes Quality plunger pump business "beachhead battle" is full of Shanghai Shen Fuli Plastic industry, the new benchmark valve Market Analysis: Valve market turnover of up to 150 billion yuan 2018 Xiamen International vending machines and self-service products Exhibition Venue - Time-related articles Production Market Analysis: Valve Market Turnover Up to 150 Billion 2018 Xiamen International Vending Machine and Self-service Products Exhibition Venue - Time of Market Opening · Valve Market Analysis: Valve Market Turnover Up to 150 Billion Yuan · 2018 Xiamen International Vending Machine and Self-service Products Exhibition Venue-Organizing Time · 2018 Xiamen Smart Retail Terminal Conference Venue-Opening Hours-Contact Information-Exhibitor Fee · About Asia Fluid Network 2018 Spring Festival Holiday Notice · Olsen Pump Industry Co., National brand of China's industrial pumps: large-diameter diesel self-priming sewage pump technology to fill gaps in the domestic · Olsen pump audit through the audit of Sinopec formally become the long-axis pump and other material procurement suppliers · 2018 Kunming Beauty Expo Registration Contact - Location - Time • 2018 Kunming Beauty Expo venue - Time - Registration Contact - 2018 Wuhan US Fair registration contact information - Location - 2018 Wuhan US Fair where the time? 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Inground Lights

Without exposing screws, the die-casting aluminum of LEDER technology`s LED inground light gives it excellent heat dissipation, prolongs its lifespan, and reaches its waterproof performance up to IP68. Humanized lighting mostly installed are lawns and undergrowth to avoid shining directly into your eyes, this inground light`s COB LED chips to shine over a 60° beam angle while the optical lens keeps the lights from dazzling your eyes.

This LED inground light features the ability to adjust the direction of the light from outside the fixture - leaving the factory seal intact. Featuring a cast brass housing that sits within a heavy-duty polymetric sleeve, it also offers silicone rubber gaskets at the lens, a potted driver, and a strain relief below, all designed to prevent water ingression.

Features:

• Sealed drive

• Modern minimalist design

• Group and control multiple lights with the smart life app

• Energy saving save electricity

• water impervious

• Color temperature :3000k-6000K

• Stainless steel frame

• Type of protection: IP20 /IP65 (Some models)

• Warranty:3 - 5 years

You can use this light where many people gather or where many activities take place. To meet different lighting needs, this light is suitable to be installed in soil, cement, stone, wood and other environments.Outdoor Shallow Inground LED Well Light round inground fixture with stainless steel finish framework, for outdoor use.

We have rich production experience in lighting. Except LED Inground Light, we also offered other product in Outdoor Lighting ,such as LED Flood Light , LED street Light , LED Inground Light, LED Spike Light ,LED Bollard Light ,LED Wall Washer,Outdoor Wall Light & step light as so on .

Inground Light,Inground Uplight,In Ground LED Lights,In Ground Up Lights

JIANGMEN LEDERLIGHT LIGHTING Co.,LTD , https://www.lederlight.com