Simulation Analysis of Primary Energy Ratio for Air-Source Gas Engine-Driven Heat Pump

2014 ◽  
Vol 953-954 ◽  
pp. 692-697
Author(s):  
Xiao Feng Ren ◽  
Shu Xing Zhao ◽  
Zhi Chao Wang ◽  
Yi Tao Zhou ◽  
Ying Jie Zhang
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Simulation Analysis ◽  
Waste Heat ◽  
Primary Energy ◽  
Energy Ratio ◽  
Gas Engine ◽  
Gas Consumption

Based on the simulation of the air conditioning construction dynamic load and simulation calculation of air-source gas engine-driven heat pump (GEHP), the air-source GEHP air conditioning in winter, summer and the annual primary energy ratio are analyzed in simulation with the combination of a hotel building in Tianjin. Firstly, DeST software is used to simulate all-year hourly air conditioning load of the building. Then air-source GEHP simulation model [1] is used to calculate the annual hourly gas consumption and the amount of GEHP's gas consumption in winter, summer and a total year afterwards can be got. At the same time, by the analysis of waste heat recovery of gas engine-driven, primary energy ratio for air-source GEHP in Tianjin is given under the different waste heat recovery of winter, summer and the annual.

Analysis of Heat Pipe Heat Exchanger (HPHE) For Waste Heat Recovery from an Air Conditioning System

2007 ◽  
Vol 2 (3) ◽  
pp. 86-95
Author(s):  
R. Sudhakaran ◽  
◽  
V. Sella Durai ◽  
T. Kannan ◽  
P.S. Sivasakthievel ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Heat Pipe ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Air Conditioning System ◽  
Pipe Heat

scholarly journals Analysis and Optimization of Coupled Thermal Management Systems Used in Vehicles

Energies ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1265 ◽  
Author(s):  
Gequn Shu ◽  
Chen Hu ◽  
Hua Tian ◽  
Xiaoya Li ◽  
Zhigang Yu ◽  
...  
Keyword(s):  
Thermal Management ◽  
Management System ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Environmental Temperature ◽  
Waste Heat ◽  
Management Systems ◽  
Engine Load ◽  
Thermal Management System

About 2/3 of the combustion energy of internal combustion engine (ICE) is lost through the exhaust and cooling systems during its operation. Besides, automobile accessories like the air conditioning system and the radiator fan will bring additional power consumption. To improve the ICE efficiency, this paper designs some coupled thermal management systems with different structures which include the air conditioning subsystem, the waste heat recovery subsystem, engine and coolant subsystem. CO2 is chosen as the working fluid for both the air conditioning subsystem and the waste heat recovery subsystem. After conducting experimental studies and a performance analysis for the subsystems, the coupled thermal management system is evaluated at different environmental temperatures and engine working conditions to choose the best structure. The optimal pump speed increases with the increase of environmental temperature and the decrease of engine load. The optimal coolant utilization rate decreases with the increase of engine load and environmental temperature, and the value is between 38% and 52%. While considering the effect of environmental temperature and road conditions of real driving and the energy consumption of all accessories of the thermal management system, the optimal thermal management system provides a net power of 4.2 kW, improving the ICE fuel economy by 1.2%.

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