scholarly journals Performance optimization of a combined solar collector, geothermal heat pump and thermal seasonal storage system for heating and cooling greenhouses

2016 ◽  
Vol 14 (2) ◽  
pp. 296-305
Author(s):  
Abtin Ataei
Keyword(s):  
Heat Pump ◽  
Performance Optimization ◽  
Solar Collector ◽  
Storage System ◽  
Geothermal Heat ◽  
Heating And Cooling ◽  
Geothermal Heat Pump

scholarly journals Efficiency of Passive Utilization of Ground “Cold” in Adaptive Geothermal Heat Pump Heating and Cooling Systems (AGHCS)

2016 ◽  
Vol 77 ◽  
pp. 06008
Author(s):  
G.P. Vasilyev ◽  
V.F. Gornov ◽  
M.V. Kolesova ◽  
A.N. Dmitriev ◽  
V.G. Silaeva
Keyword(s):  
Heat Pump ◽  
Geothermal Heat ◽  
Cooling Systems ◽  
Heating And Cooling ◽  
Geothermal Heat Pump

scholarly journals Modeling of an Air Conditioning System with Geothermal Heat Pump for a Residential Building

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Silvia Cocchi ◽  
Sonia Castellucci ◽  
Andrea Tucci
Keyword(s):  
Heat Pump ◽  
Air Conditioning ◽  
Residential Building ◽  
Heat Pumps ◽  
Geothermal Heat ◽  
Air Conditioning System ◽  
Heating And Cooling ◽  
Ground Source ◽  
Geothermal Heat Pump ◽  
Geothermal Plant

The need to address climate change caused by greenhouse gas emissions attaches great importance to research aimed at using renewable energy. Geothermal energy is an interesting alternative concerning the production of energy for air conditioning of buildings (heating and cooling), through the use of geothermal heat pumps. In this work a model has been developed in order to simulate an air conditioning system with geothermal heat pump. A ground source heat pump (GSHP) uses the shallow ground as a source of heat, thus taking advantage of its seasonally moderate temperatures. GSHP must be coupled with geothermal exchangers. The model leads to design optimization of geothermal heat exchangers and to verify the operation of the geothermal plant.

scholarly journals Hybrid Solar Geothermal Heat Pump System Model Demonstration Study

2022 ◽  
Vol 9 ◽  
Author(s):  
Yu-Jin Kim ◽  
Libing Yang ◽  
Evgueniy Entchev ◽  
Soolyeon Cho ◽  
Eun-Chul Kang ◽  
...  
Keyword(s):  
Power Consumption ◽  
Ambient Temperature ◽  
Heat Pump ◽  
Geothermal Heat ◽  
Pump System ◽  
Heat Pump System ◽  
Source Temperature ◽  
Heating And Cooling ◽  
Geothermal Heat Pump ◽  
Polygeneration System

In this paper, the development and demonstration of a hybrid solar geothermal heat pump polygeneration system is presented. The poly-generation system has been designed, modeled, and simulated in TRNSYS software environment. Its performance was assessed followed by installation and demonstration at a demo site in Cheongju, Korea. The space heating and cooling load of the building is 13.8 kW in heating mode at an ambient temperature of −10.3°C and 10.6 kW in cooling mode at an ambient temperature of 32.3°C. The simulation data were compared with the field demo data using ISO 13256. The results showed that the model data compare well with the demo data both in heating and cooling modes of operation. At a source temperature of 16.7°C, the heat pump lab performance data-based COPc shows 9.9, while demonstration COPc shows 10.3, thus, representing 4.3% relative error. The heat pump source temperature decreased by 4.0°C from 20.9°C to 16.9°C due to ground heat exchanger coupling and resulted in a COPc increase by 13.3% from 8.5 to 9.8. When compared at the design conditions (outside temperature of 32.3°C), the TRSNYS model overestimated the demonstration site data by 12%, 9.3 vs. 8.1 kW with power consumption of 3.1 vs. 2.2 kW. The hybrid polygeneration system power consumption decreased by 1.2 kW when ambient temperature decreased from 35°C to 25°C.

scholarly journals THERMAL PERFORMANCES OF DIFFERENT TYPES OF UNDERGROUND HEAT EXCHANGERS

2020 ◽  
Vol 2 (2) ◽  
pp. 10-50
Author(s):  
Abdeen Omer
Keyword(s):  
Heat Pump ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Stratospheric Ozone ◽  
Performance Standards ◽  
Montreal Protocol ◽  
Geothermal Heat ◽  
Heating And Cooling ◽  
Ground Source ◽  
Geothermal Heat Pump

Globally buildings are responsible for approximately 40% of the total world annual energy consumption. Most of this energy is for the provision of lighting, heating, cooling and air conditioning. An increase in awareness of the environmental impact of CO2, NOx and CFCs emissions triggered a renewed interest in environmentally friendly cooling and heating technologies. Under the 1997 Montreal Protocol, governments agreed to phase out chemicals used as refrigerants that have the potential to destroy stratospheric ozone. An approach isneeded to integrate renewable energies in a way to achieve high building performance standards. However, because renewable energy sources are stochastic and geographically diffuse, their ability to match demand is determined by the adoption of one of the following two approaches: the utilisation of a capture area greater than that occupied by the community to be supplied, or the reduction of the community’s energy demands to a level commensurate with the locally available renewable resources. Ground source heat pump (GSHP) systems (also referred to as geothermal heat pump systems, earth-energy systems and GeoExchange systems) have received considerable attention in recent decades as an alternative energy source for residential and commercial space heating and cooling applications. The GSHP applications are one of three categories of geothermal energy resources as defined by ASHRAE and include high-temperature (>150°C) for electric power production, intermediate temperature (<150°C) for direct-use applications and GSHP applications (generally (<32°C). The GSHP applications are distinguished from the others by the fact that they operate at relatively low temperatures.

Evaluation of Water to Water Heat Pump Model in Energy Plus Using Measurement Data

2015 ◽  
Author(s):  
Saif Abdulameer ◽  
Junghyon Mun ◽  
Yong Tao
Keyword(s):  
Power Consumption ◽  
Heat Pump ◽  
Measurement Data ◽  
Geothermal Heat ◽  
Heating And Cooling ◽  
Energy Plus ◽  
Geothermal Heat Pump ◽  
Different Seasons ◽  
Actual Environment ◽  
Long Operation

The purpose of this work is to find a protocol and a model that describes the behavior of a geothermal heat pump in an actual environment in order to determine the actual power consumption and capacity of the device. This paper focuses on the use of field measured data to derive the performance of the heat pump. The equation fit model is used as it does not demand very detailed input. The model employs the condenser and evaporator inlet temperatures as input data. The heat pump provides heating and cooling for the living and working area of the zero energy lab which is 1200 sq ft building and designed to intimate a small residence., and both cooling and heating were investigated. A model was generated for each case. Long operation periods were sought for model generating so two experiments were set in different seasons to collect the data for each mode and each experiment lasted for 10 days. Model results showed an error range of ±10% for the unit capacity and power consumption.

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