A new heat recovery technique for air-conditioning/heat-pump system

2008 ◽  
Vol 28 (17-18) ◽  
pp. 2360-2370 ◽  
Author(s):  
Guangcai Gong ◽  
Wei Zeng ◽  
Liping Wang ◽  
Chih Wu
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Pump System ◽  
Heat Pump System ◽  
Recovery Technique

scholarly journals Development and verification of control system for heat recovery ground source heat pump system

2018 ◽  
Author(s):  
Takao Katsura ◽  
Yutaka Shoji ◽  
Yoshiki Miyashita ◽  
Katsunori Nagano ◽  
Yasushi Nakamura
Keyword(s):  
Control System ◽  
Heat Pump ◽  
Heat Recovery ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

Application of an Exhaust Heat Recovery System for Domestic Hot Water

2008 ◽  
Author(s):  
Lanbin Liu ◽  
Lin Fu ◽  
Yi Jiang
Keyword(s):  
Solar Energy ◽  
Heat Pump ◽  
Heat Recovery ◽  
Tap Water ◽  
Hot Water ◽  
Collection System ◽  
Pump System ◽  
Heat Pump System ◽  
Exhaust Heat ◽  
Exhaust Heat Recovery

Typically there is a great deal of waste heat available in drainage system of large-scale public bathhouses, such as public bathhouses in schools, barracks and natatoriums. The paper advances a heat pump system used in bathhouses for exhaust heat recovery. The system consists of solar energy collection system, drainage collection system and heat pump system for exhaust heat recovery. In the system, tap water is heated by energy from solar energy collection system, and is used as hot water for bathing at the beginning. At the same time, drainage collection system collects sewage from bathhouses, and then electric heat pump starts up and recovers the exhaust heat in sewage and heats the tap water. In this way, heat is recycled. Practical operation of the system was introduced, and drainage temperature as well as equipment capacity was optimized based on a practical example. Compared with gas-fired (oil-fired, coal-fired, electric) boilers, the system has advantages of lower energy consumption, less pollution and lower operating cost. Therefore, the system has great superiority in energy conservation and has a good application prospect.

Evaluation of low-GWP and mildly flammable mixtures as new alternatives for R410A in air-conditioning and heat pump system

2021 ◽  
Vol 121 ◽  
pp. 95-104
Author(s):  
Binbin Yu ◽  
Hongsheng Ouyang ◽  
Junye SHI ◽  
Wuchan LIU ◽  
Jiangping CHEN
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Pump System ◽  
Heat Pump System

Application Analysis of Pile Foundation Ground Source Heat Pump System

2013 ◽  
Vol 448-453 ◽  
pp. 2839-2842 ◽  
Author(s):  
Yun Zhun Fu ◽  
Xin Hui Du ◽  
Xu Zhang
Keyword(s):  
Heat Pump ◽  
Pile Foundation ◽  
Air Conditioning ◽  
Test Method ◽  
Buried Pipe ◽  
Pump System ◽  
Air Conditioning System ◽  
Heat Pump System ◽  
Advantages And Disadvantages ◽  
Pipe Heat

Pile foundation thermal response test method was adopted to measure the heat transfer capacity of the pile foundation U-pipe heat exchanger. The heat pump system of pile foundation buried pipe was designed. BIN method was adopted to calculate the annual dynamic load of office in Shanghai and annual energy consumption, and its energy-saving effect was determined by comparing with the air-cooled heat pump air conditioning system. Finally, annual cost method was employed to study the investment and annual operating expenses of pile foundation buried pipe heat pump air conditioner systems, and their economy, advantages and disadvantages by comparing with those of the air-cooled heat pump air conditioning system were analyzed.

scholarly journals THE HEAT PUMP SYSTEM FOR VENTILATION AND AIR CONDITIONING INSIDE THE PRODUCTION AREA WITH AN EXCESSIVE INTERNAL MOISTURE GENERATION

2020 ◽  
Vol 17 (2) ◽  
pp. 78-86
Author(s):  
M.K. Bezrodny ◽  
Keyword(s):  
Energy Efficiency ◽  
Relative Humidity ◽  
Heat Pump ◽  
Air Conditioning ◽  
Warm Season ◽  
Pump System ◽  
Heat Pump System ◽  
Environment Temperature ◽  
Production Area ◽  
Continental Climate

The paper studies application feasibility and energy efficiency of the ventilation and air conditioning heat pump system for maintaining comfort conditions inside the production area with an excessive internal moisture generation during the warm season. In this regard, a thermodynamic analysis of a heat pump system with a partial exhaust air recirculation and a variable ratio of fresh outside air was carried out. Numerical analysis was then done to estimate the influence of changes in the environment temperature and relative humidity and the characteristics of the ventilation and air conditioning object on the system parameters. This allowed to determine potential capabilities of this system to maintain comfortable conditions in the production area. It was also shown that the required additional cooling of the supply air at the entrance to the premise for air conditioning demands can be determined by a simple coefficient and its calculation method is provided in the article. The heat pump system of temperature and humidity maintenance has the highest energy efficiency in the zone of relatively low environment temperatures and largely depends on the relative humidity of the outside air. This suggests that the studied system is suitable for application in countries with temperate continental climate.

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