Effect of a Geothermal Heat Pump in Cooling Mode on the Housing Environment and Swine Productivity Traits

This study compared the effects of the cooling mode of a geothermal heat pump (GHP) system with those of a traditional cooling system (ventilation fans) inside a pig house on the internal house temperature, harmful gas emissions, and the growth performance of the pigs. During the 19-week experimental period, the temperature inside the house connected to the GHP cooling system was significantly lower (p < 0.05) than that of a house with a conventional cooling system. Similarly, the temperature–humidity index (THI) was significantly reduced (p < 0.05) in the GHP cooling system-connected pig house. Furthermore, the concentrations of ammonia (NH3) and hydrogen sulfide (H2S) were also decreased significantly in the GHP-installed pig house (p < 0.05). However, no differences were observed in the concentrations of particulate matter (PM2.5) and formaldehyde (p > 0.05). The pigs reared in the GHP-equipped pig house gained significantly more weight (p < 0.05) by the end of the experiment. The GHP cooling system can therefore be implemented as a renewable, environmentally friendly energy source in pig farms for sustainable swine production without adversely affecting the productivity parameters.

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An Economical Analysis on a Solar Greenhouse Integrated Solar Assisted Geothermal Heat Pump System

Journal of Energy Resources Technology ◽

10.1115/1.2126984 ◽

2005 ◽

Vol 128 (1) ◽

pp. 28-34 ◽

Cited By ~ 19

Author(s):

Onder Ozgener ◽

Arif Hepbasli

Keyword(s):

Heat Pump ◽

Cooling System ◽

Heat Pumps ◽

Renewable Energy Resources ◽

Ahp Method ◽

Geothermal Heat ◽

Pump System ◽

Heat Pump System ◽

Economical Analysis ◽

Geothermal Heat Pump

The main objective in doing the present study is twofold, namely (i) to review briefly the utilization of geothermally heated greenhouses and geothermal heat pumps in Turkey, since the system studied utilizes both renewable energy resources and (ii) to present the Analytical Hierarchy Process (AHP) as a potential decision making method for use in a greenhouse integrated solar assisted geothermal heat pump system (GISAGHPS), which was installed in the Solar Energy Institute of Ege University, Izmir, Turkey. This investigation may also be regarded as the one of the limited studies on the application of the AHP method to GISAGHPs, as no studies on the GISAGHPS have appeared in the literature. In this context, an economic analysis is performed based on the life cycle costing technique first. The results are then evaluated by applying the AHP method to a study, which is a comparative study on the GISAGHPS and split system. The results indicated that the GISAGHPS is economically preferable to the conventional split heating/cooling system under Turkey’s conditions.

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Effect of heating system using a geothermal heat pump on the production performance and housing environment of broiler chickens

Poultry Science ◽

10.3382/ps.2011-01666 ◽

2012 ◽

Vol 91 (2) ◽

pp. 275-281 ◽

Cited By ~ 8

Author(s):

H.C. Choi ◽

H.M. Salim ◽

N. Akter ◽

J.C. Na ◽

H.K. Kang ◽

...

Keyword(s):

Heat Pump ◽

Broiler Chickens ◽

Heating System ◽

Production Performance ◽

Geothermal Heat ◽

Housing Environment ◽

Geothermal Heat Pump

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Cooling mode experimental analysis of a direct expansion geothermal heat pump with a control depending on the discharge pressure

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2019.113955 ◽

2019 ◽

Vol 160 ◽

pp. 113955 ◽

Cited By ~ 2

Author(s):

Jean-Louis Comlan Fannou ◽

Louis Lamarche ◽

Clarence Semassou Guy ◽

Kajl Stanislaw ◽

Antoine Vianou

Keyword(s):

Heat Pump ◽

Experimental Analysis ◽

Direct Expansion ◽

Cooling Mode ◽

Geothermal Heat ◽

Geothermal Heat Pump ◽

Discharge Pressure

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Effect of a Heating System Using a Ground Source Geothermal Heat Pump on Production Performance, Energy-Saving and Housing Environment of Pigs

Animals ◽

10.3390/ani10112075 ◽

2020 ◽

Vol 10 (11) ◽

pp. 2075

Author(s):

Hong Seok Mun ◽

Muhammad Ammar Dilawar ◽

Myeong Gil Jeong ◽

Dhanushka Rathnayake ◽

Jun Sung Won ◽

...

Keyword(s):

Heat Pump ◽

Heating System ◽

Production Performance ◽

Conventional Heating ◽

Geothermal System ◽

Outlet Temperature ◽

Geothermal Heat ◽

Housing Environment ◽

Ground Source ◽

Geothermal Heat Pump

This study examined the effects of a heating system using a ground source geothermal heat pump (GHP). A GHP was installed in a pig house, and a comparative analysis was performed between the GHP and the control (conventional heating system) in terms of the production performance, housing environment, noxious gas emissions, electricity consumption, and economics. The geothermal system performance index, such as the coefficient of performance (COP), inlet, and outlet temperature, were also evaluated. The outflow temperature during each period (weaning, growing, and finishing) was significantly higher than the inflow temperature in all three components of the GHP system. Similarly, the average internal temperature of the GHP-connected pig house was increased (p < 0.05) during each period. The carbon dioxide (CO2) concentration, electricity usage, and cost of electricity during the 16-week experimental period were reduced significantly in the GHP system relative to the control. The concentrations of ammonia (NH3) during the growing and finishing period and the concentrations of formaldehyde during the weaning phase were also lower in the GHP-installed pig house (p < 0.05). These results indicate that the GHP system can be used as an environmentally friendly renewable energy source in pig houses for sustainable pig production without harming the growth performance.

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Comparing Geothermal Heat Pump Systems to Conventional HVAC Systems in Hot and Humid Climates

Journal of Civil Engineering and Construction ◽

10.32732/jcec.2021.10.2.84 ◽

2021 ◽

Vol 10 (2) ◽

pp. 84-100

Author(s):

Claudia Duran De Tapia ◽

Christofer M. Harper

Keyword(s):

Heat Pump ◽

Cooling System ◽

Payback Period ◽

Conventional Heating ◽

Humid Climate ◽

Geothermal Heat ◽

Case Examples ◽

First Case ◽

Hot And Humid Climates ◽

Geothermal Heat Pump

Geothermal heat pump (GHP) systems are more concentrated to moderate climate regions, although the potential for GHP systems in hot and humid climates is possible as past research efforts have demonstrated this using simulations and commercial case examples. This research investigates the use of residential GHP systems for the hot and humid climate found in southern Louisiana. The authors collected field performance information, including initial system cost, and electricity consumption and costs from two residential case studies in which each case included one home with a conventional heating and cooling system and one home with a GHP system. Using a comparative analysis and analysis of variance, results illustrate that initial cost of GHP system in the first case was $13,285 more and the second case was $17,588 more than the installation costs of a conventional system. Further, the GHP system payback period depends on the whether the design uses a horizontal or vertical ground loop, and the designer and contractor’s quality and experience in performing the GHP work as the first case resulted in a payback period of 70 years while the second case had a payback period of only seven years. Findings show that when an appropriate installation occurs, GHP system can save consumption and energy costs for residential homes in hot and humid climates.

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