Optimal Design of Control System for Ground Source Heat Pump Unit

This paper describes the research and implementation of ground source heat pump unit remote real-time monitoring system, researches in remote real-time monitoring system's overall design, hardware design, software design and implementation of OPC communication. The host computer takes advantage of the human-computer interaction interface of configuration software to achieve the remote real-time monitoring for ground source heat pump unit's running state; the lower computer uses data collector to intensively collect the data which is measured by field measuring instruments, and to achieve remote data transmission based on Ethernet, and then to carry out the communication between the host computer and the lower computer via OPC technology. The results show that the system achieves remote real-time monitoring of ground source heat pump unit, and is stable, easy to operate and provides a reliable basis for the actual energy saving effect's evaluation of ground source heat pump system.

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Refrigerant amount detection algorithm for a ground source heat pump unit

Renewable Energy ◽

10.1016/j.renene.2011.08.055 ◽

2012 ◽

Vol 42 ◽

pp. 111-117 ◽

Cited By ~ 13

Author(s):

Hangseok Choi ◽

Honghyun Cho ◽

Jong Min Choi

Keyword(s):

Heat Pump ◽

Detection Algorithm ◽

Ground Source Heat Pump ◽

Pump Unit ◽

Ground Source ◽

Heat Pump Unit

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Simulation and Experimental Research on Screw Ground Source Heat Pump Unit

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.732-733.152 ◽

2013 ◽

Vol 732-733 ◽

pp. 152-155

Author(s):

Qiang Wang ◽

Zhao Lei Ding ◽

Hai Yun Wang ◽

Wen Chao Lv

Keyword(s):

Water Temperature ◽

Heat Pump ◽

Ground Source Heat Pump ◽

Operating Characteristics ◽

Pump Unit ◽

Ground Source ◽

Heating Capacity ◽

Heat Pump Unit ◽

Long Time ◽

Main Factor

A grey box model of screw ground source heat pump unit has been established and operating characteristics of the unit using R22 refrigerants were simulated. The effects on refrigerating capacity, heating capacity, power consumption of the compressor and COP on conditions of cooling and heating have been analyzed with different inlet water temperature of evaporator and inlet water temperature of condenser. Results show that main factor which affecting COP of heat pump unit is inlet water temperature of condenser. The change of refrigerating capacity and heating capacity are mainly caused by inlet water temperature of evaporator. Measures can be done to decrease the inlet water temperature of condenser when the unit operates for a long time and to increase inlet water temperature of evaporator on very hot or very cold conditions.

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The Contrast Experimental Study of Sewage Source Heat Pump System and Ground Source Heat Pump System in Hot Summer and Cold Winter Area

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.953-954.698 ◽

2014 ◽

Vol 953-954 ◽

pp. 698-704 ◽

Cited By ~ 2

Author(s):

Zhen Zhao Liu ◽

Bo Song ◽

Ying Ning Hu ◽

Shan Shan Hu

Keyword(s):

Heat Pump ◽

Ground Source Heat Pump ◽

Cold Winter ◽

Pump Unit ◽

Pump System ◽

Heat Pump System ◽

Ground Source ◽

Heat Pump Unit ◽

Practical Engineering ◽

Sewage Source

For two practical engineering case in a University in Guilin, this paper mainly introduces the performance of sewage-source heat pump and ground source heat pump and compare the running status in two kinds of system. The studies have shown that the sewage source heat pump unit COP at about 3.9, the system COP at about 3.3, ground source heat pump unit COP at about 4.5, the system COP at about 3.4.

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