scholarly journals Effect of a Sustainable Air Heat Pump System on Energy Efficiency, Housing Environment, and Productivity Traits in a Pig Farm

2020 ◽  
Vol 12 (22) ◽  
pp. 9772
Author(s):  
Myeong Gil Jeong ◽  
Dhanushka Rathnayake ◽  
Hong Seok Mun ◽  
Muhammad Ammar Dilawar ◽  
Kwang Woo Park ◽  
...  
Keyword(s):  
Heat Pump ◽  
Electricity Consumption ◽  
Heating System ◽  
Conventional Heating ◽  
Growth Stages ◽  
Pump System ◽  
Average Growth ◽  
Heating Systems ◽  
Housing Environment ◽  
Significant Difference

High electricity consumption, carbon dioxide (CO2), and elevated noxious gas emission in the global livestock sector have a negative influence on environmental sustainability. This study examined the effects of a heating system using an air heat pump (AHP) on the energy saving, housing environment, and productivity traits of pigs. During the experimental period of 16 weeks, the internal temperature was found to be higher (p < 0.05) in the AHP house than in the conventional house. Moreover, the average electricity consumption and CO2 emission decreased by approximately 40 kWh and 19.32 kg, respectively, in the AHP house compared to the house with the conventional heating system. The average NH3 and H2S emissions were significantly lower in the AHP house (p < 0.05) during the growth stages. The AHP and conventional heating systems did not have a significant influence (p > 0.05) on the average ultra-fine dust (PM2.5) and formaldehyde level fluctuations. Furthermore, both heating systems did not show a significant difference in the average growth performance of pigs (p > 0.05), but the weight gain tended to increase in the AHP house. In conclusion, the AHP system has great potential to reduce energy consumption, greenhouse gas (GHG) emissions, and noxious gas emissions by providing economic benefits and an eco-friendly renewable energy source.

scholarly journals Effect of Air Heat Pump Cooling System as a Greener Energy Source on the Air Quality, Housing Environment and Growth Performance in Pig House

Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1474
Author(s):  
Dhanushka Rathnayake ◽  
Hong-Seok Mun ◽  
Muhammad Ammar Dilawar ◽  
Il-Byung Chung ◽  
Kwang-Woo Park ◽  
...  
Keyword(s):  
Energy Source ◽  
Air Quality ◽  
Growth Performance ◽  
Heat Pump ◽  
Cooling System ◽  
Electricity Consumption ◽  
Housing Environment ◽  
Significant Difference ◽  
Cooling Effects ◽  
Carbon Dioxide Co2

The present study examined the cooling effects of an air heat pump (AHP) system. An AHP system was installed in a pig house to compare the effects with a traditional cooling system on the growth performance, noxious gas emission, housing environment and consumption of electricity. During the 19-week experimental trial, the internal temperature in the AHP cooling system-connected pig house was significantly decreased (p < 0.05) than the conventional house. Similarly, the temperature–humidity index (THI) was significantly reduced (p < 0.05) in the growing and late finishing period. The carbon dioxide (CO2) and electricity consumption were also reduced significantly in the AHP cooling system relative to the control. The concentration of ammonia (NH3) during the weaning and finishing phase and the concentration of hydrogen sulfide (H2S) during all periods were lower in the AHP-installed pig house (p < 0.05). From 0–19 weeks, there was no significant difference was observed (p > 0.05) in terms of the growth performance of pigs in both houses. These results show that the AHP cooling system can be implemented as an environmentally friendly renewable energy source in swine farms for sustainable pig production and better air quality without adversely affecting productivity parameters.

The Matching Research of Soil Source Heat Pump and Central Heating System in Cold Region

2013 ◽  
Vol 805-806 ◽  
pp. 486-491
Author(s):  
Yue Ren Wang ◽  
Yu Feng Jiang ◽  
Min Yu
Keyword(s):  
Heat Pump ◽  
Heat Load ◽  
Working Condition ◽  
Heating System ◽  
Cold Region ◽  
Pump System ◽  
Heat Pump System ◽  
Heating Systems ◽  
Central Heating ◽  
Practical Engineering

Using Dest software simulation benchmark building the dynamic heat load, analyzing its distribution pattern, at the same timewe can also get heat pump units in the COP value is different under different working condition, then the soil source heat pump and central heating complementary heating system, undertake in soil source heat pump system design heat load, under theconditions of different proportion of the whole system operation energy consumption, initial investment analysis, we conclude thatthe soil source heat pump and central heating complementary heating systems of different energy matching optimization features,this provides a reference for practical engineering.

scholarly journals Environmental-economic analysis of the heating system for a single-family building

2018 ◽  
Vol 44 ◽  
pp. 00054
Author(s):  
Agnieszka Jachura
Keyword(s):  
Comparative Analysis ◽  
Economic Analysis ◽  
Heat Pump ◽  
Renewable Energy Sources ◽  
Heating System ◽  
Single Family ◽  
Pump System ◽  
Heat Pump System ◽  
Heating Systems ◽  
Family Building

This paper discusses the use of modern and effective heating systems, using fossil fuels and renewable energy sources on the example of a comparative analysis of a gas boiler and heat pump for a single-family building. The aim of the work was to conduct a comparative analysis of heating systems in terms of energy, economy and ecology. The concepts of heating systems based on a gas boiler and a heat pump are proposed. An economic analysis based on the LCC and ecological method was carried out, related to the equivalent emission, in order to compare the degree of environmental nuisance of the proposed heat sources. For the building in question, a more advantageous solution was the use of a system based on a condensing gas boiler. The economic analysis shows that in the assumed life cycle (20 years), the total cost for a heating system based on a gas boiler is lower than in the case of a heat pump by 11%. Also, the initial costs in this variant are lower by nearly half compared to the heat pump system. Environmental analyzes have shown lower annual emissions of pollutants and a 6-fold lower equivalent emission for a gas-fired heating system.

Effect of Ground-Coupled Heat Pump Technique Application on Economic Performance and Emission Reduction in Swine Farm in Beijing China

2012 ◽  
Vol 610-613 ◽  
pp. 3196-3201 ◽  
Author(s):  
Mei Zhi Wang ◽  
Ji Jun Liu ◽  
Zhong Hong Wu ◽  
Zhao Hui Chen ◽  
Jian Hui Tian
Keyword(s):  
Heat Pump ◽  
Economic Performance ◽  
Emission Reduction ◽  
Heating System ◽  
Pump System ◽  
Heating Systems ◽  
Performance And Emission ◽  
Swine Farms ◽  
Ground Coupled Heat Pump ◽  
Beijing China

To find low carbon heating measures in swine farms in Beijing China, A study of swine houses with area of 920 m2in swine farms in Beijing China was conducted and economic performance, emission reduction of ground-coupled heat pump (GCHP) heating system, coal fired heating system and other heating systems were analyzed and compared. The results showed that the initial investment of ground-coupled heat pump system was more than that of the coal fired heating system, the relative running cost of the heating systems of ground-coupled heat pump, coal fired, electricity resistance and natural gas was 0.86, 1.00, 3.17 and 1.22, respectively. CO2avoidances of GCHP heating systems were 57% and 73%, respectively, compared with conventional coal fired heating system and electricity resistance heating.

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

Animals ◽  
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.

Thermodynamic Analysis of Solar Heat Pump Assisted Heating Systems

2014 ◽  
Author(s):  
Zozan Siyahhan Türkgenç ◽  
Alican Çebi ◽  
Ali Celen ◽  
Ahmet Selim Dalkılıç ◽  
Somchai Wongwises
Keyword(s):  
Solar Energy ◽  
Heat Pump ◽  
Alternative Energy ◽  
Heating System ◽  
Heat Pumps ◽  
Pump System ◽  
Heat Pump System ◽  
Heating Systems ◽  
Solar Heat ◽  
The City

In this study, a system has been developed which can be used for heating buildings by utilizing solar energy, which is free and abundant in our country, with the aim of minimizing fossil based fuel consumption especially at wintertime and this system’s efficiency has been analyzed mathematically with numerical methods. First of all, in this study the performance of a solar heat pump system is examined. The city of Antalya is chosen for this study which is in the southern region of Turkey with an abundant source of solar energy. The usability of solar energy throughout the year is examined and its application areas in building heating with the utilization of heat pumps are determined. In addition an auxiliary system with an alternative energy source is considered in case solar energy is insufficient by itself. In order to determine all of the above, energy analysis of the system is performed. The advantages of the solar heat pump heating system are studied considering the amount of energy saved and the efficiency of the system. Thermodynamic and thermoeconomic analysis has been carried out in order to determine how effectively the solar energy is utilized by the system and the advantages of solar heat pump.

Thermodynamic Analysis of a Central Heating System Combing the Urban Heat Network With Geothermal Energy

2013 ◽  
Author(s):  
Xiao Wang ◽  
Lin Fu ◽  
Xiling Zhao ◽  
Hua Liu
Keyword(s):  
Heat Exchanger ◽  
Heat Exchange ◽  
Heat Pump ◽  
Geothermal Energy ◽  
Heating System ◽  
Heat Network ◽  
Pump System ◽  
Absorption Heat Pump ◽  
Central Heating ◽  
Exchange Unit

In recent years, with the continuous urban expansion, the central heating sources are commonly insufficient in the areas of Northern China. Besides, the increasing heat transfer temperature difference results in more and more exergy loss between the primary heat network and the secondary heat network. This paper introduces a new central heating system which combines the urban heat network with geothermal energy (CHSCHNGE). In this system, the absorption heat exchange unit, which is composed of an absorption heat pump and a water to water heat exchanger, is as alternative to the conventional water to water heat exchanger at the heat exchange station, and the doing work ability of the primary heat network is utilized to drive the absorption heat pump to extract the shallow geothermal energy. In this way, the heat supply ability of the system will be increased with fewer additional energy consumptions. Since the water after driving the absorption heat pump has high temperature, it can continue to heat the supply water coming from the absorption heat pump. As a result, the water of the primary heat network will be stepped cooled and the exergy loss will be reduced. In this study, the performance of the system is simulated based on the mathematical models of the heat source, the absorption heat exchange unit, the ground heat exchanger and the room. The thermodynamic analyses are performed for three systems and the energy efficiency and exergy efficiency are compared. The results show that (a) the COP of the absorption heat exchange unit is 1.25 and the heating capacity of the system increases by 25%, which can effectively reduce the requirements of central heating sources; (b) the PER of the system increases 14.4% more than that of the conventional co-generation central heating system and 54.1% more than that of the ground source heat pump system; (c) the exergy efficiency of the CHSCHNGE is 17.6% higher than that of the conventional co-generation central heating system and 45.6% higher than that of the ground source heat pump system.

The design of a seasonal heat storage system with a geothermal heat pump for a residential building in Tehran

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Akbar Alidadi Shamsabadi ◽  
Mehdi Jahangiri ◽  
Tayebeh Rezaei ◽  
Rouhollah Yadollahi Farsani ◽  
Ali Seryani ◽  
...  
Keyword(s):  
Heat Pump ◽  
Heating System ◽  
Coefficient Of Performance ◽  
Maximum Temperature ◽  
Software Environment ◽  
Geothermal Heat ◽  
Pump System ◽  
Matlab Software ◽  
Content Type ◽  
Heat Pump System

Purpose In this study, a solar water heating system along with a seasonal thermal energy storage and a heat pump is designed for a villa with an area of 192 m2 in Tehran, the capital of Iran. Design/methodology/approach According to the material and the area of the residential space, the required heating of the building was calculated manually and then the thermodynamic analysis of the system and simulation was done in MATLAB software. Finally, regarding the waste of system, an efficient solar heating system, providing all the required energy to heat the building, was obtained. Findings The surface area of the solar collector is equal to 46 m2, the capacity of the tank is about 2,850 m3, insulation thickness stands at 55 cm and the coefficient of performance in required heat pump is accounted to about 9.02. Also, according to the assessments, the maximum level of received energy by the collector in this system occurs at a maximum temperature of 68ºC. Originality/value To the best of the authors’ knowledge, in the present work, for the first time, using mathematical modeling and analyzing of the first and second laws of thermodynamics, as well as using of computational code in MATLAB software environment, the solar-assisted ground source heat pump system is simulated in a residential unit located in Tehran.

Solar Assisted Heat Pump System for Floor Heating

2011 ◽  
Vol 354-355 ◽  
pp. 828-832
Author(s):  
Xi Ming Zhang ◽  
Dong Hui Pan ◽  
Qing Bo Zhang
Keyword(s):  
Heat Pump ◽  
Heating System ◽  
Primary Energy ◽  
Conventional System ◽  
Pump System ◽  
Storage Container ◽  
Heat Pump System ◽  
Gas Heating ◽  
Supply Systems ◽  
Floor Heating

Solar assisted heat pump system(SAHP) has a wide and wonderful future for its excellent performance in energy saving and environment protection. Solar assisted heat pump system for floor heating is combined by solar assisted heat pump and floor heating. Presents the operating principal and key equipments and designs solar collector, thermal storage container, floor-coil radiator and so on， discusses the feasibility of introduction of a combined heating system for an energy building in Qingdao. On the base of this, two types of energy supply systems, the conventional system(gas heating and SAHP system, were set. Those two types of systems were evaluated regarding energy efficiency and environmental load. According to the results, compared with the conventional system, SAHP system was capable of reducing the primary energy consumption and CO2 emission, respectively 20% and 19.2%.

scholarly journals Frosting Phenomenon and Frost-Free Technology of Outdoor Air Heat Exchanger for an Air-Source Heat Pump System in China: An Analysis and Review

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2642 ◽  
Author(s):  
Yi Zhang ◽  
Guanmin Zhang ◽  
Aiqun Zhang ◽  
Yinhan Jin ◽  
Ruirui Ru ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Heat Pump ◽  
Operating Cost ◽  
Heating System ◽  
Coefficient Of Performance ◽  
Outdoor Air ◽  
Pump System ◽  
Heat Pump System ◽  
Reduce Operating Cost ◽  
Air Source Heat Pump

Frost layer on the outdoor air heat exchanger surface in an air-source heat pump (ASHP) can decrease the system coefficient of performance (COP). Although the common defrosting and anti-frosting methods can improve the COP, the periodic defrosting not only reduces the system energy efficiency but also deteriorates the indoor environment. To solve these problems, it is necessary to clearly understand the frosting phenomenon and to achieve the system frost-free operation. This paper focused firstly on the analyses of frosting pathways and frosting maps. Followed by summarizing the characteristics of frost-free technologies. And then the performances of two types of frost-free ASHP (FFASHP) systems were reviewed, and the exergy and economic analysis of a FFASHP heating system were carried out. Finally, the existing problems related to the FFASHP technologies were proposed. Results show that the existing frosting maps need to be further improved. The FFASHP systems can not only achieve continuous frost-free operation but reduce operating cost. And the total COP of the FFASHP heating system is approximately 30–64% higher than that of the conventional ASHP system under the same frosting conditions. However, the investment cost of the FFASHP system increases, and its reliability also needs further field test in a wider frosting environment. In the future, combined with a new frosting map, the control strategy for the FFASHP system should be optimized.

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