Geothermal heat pump in heating mode: Modeling and simulation on TRNSYS

Chargui, Ridha; Sammouda, Habib; Farhat, Abdelhamid

doi:10.1016/j.ijrefrig.2012.06.002

Cited by 59 publications

(25 citation statements)

References 14 publications

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“…In water to water geothermal systems, thermal energy is extracted from the ground usually by vertical closed loops, processed by the heat pump and distributed to the building, using a mix of water and propylene glycol as carrier. Ground-source heat pumps are already widely used to serve residential and commercial buildings, especially in the USA, Europe and Asia, due to their great potential for energy savings in building air conditioning and in reducing CO 2 emissions [25][26][27][28][29][30][31][32]. At present, this technology is not yet in widespread use in Italy, especially in the center and south areas, mainly because of the high initial costs (borehole drilling, about 40-55 €/m in Italy).…”

Section: The Pilot Heating/cooling System Ideasmentioning

confidence: 99%

Development of Innovative Heating and Cooling Systems Using Renewable Energy Sources for Non-Residential Buildings

et al. 2013

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Industrial and commercial areas are synonymous with high energy consumption, both for heating/cooling and electric power requirements, which are in general associated to a massive use of fossil fuels producing consequent greenhouse gas emissions. Two pilot systems, co-funded by the Italian Ministry for the Environment, have been created to upgrade the heating/cooling systems of two existing buildings on the largest industrial estate in Umbria, Italy. The upgrade was specifically designed to improve the system efficiency and to cover the overall energy which needs with renewable energy resources. In both cases a solar photovoltaic plant provides the required electric power. The first system features a geothermal heat pump with an innovative layout: a heat-storage water tank, buried just below ground level, allows a significant reduction of the geothermal unit size, hence requiring fewer and/or shorter boreholes (up to 60%-70%). In the other system a biomass boiler is coupled with an absorption chiller machine, controlling the indoor air temperature in both summer and winter. In this case, lower electricity consumption, if compared to an electric compression chiller, is obtained. The first results of the monitoring of summer cooling are presented and an evaluation of the performance of the two pilot systems is given.

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Section: The Pilot Heating/cooling System Ideasmentioning

confidence: 99%

Development of Innovative Heating and Cooling Systems Using Renewable Energy Sources for Non-Residential Buildings

et al. 2013

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“…Asdrubali et al [12] described a solar energy system for greenhouse heating and compared simulation results with real energy consumption. Chargui et al, and Sungbok et al [13,14], who evaluated the applicability of geothermal energy for heating and cooling greenhouses, analyzed the on-demand utilization of energy stored in the earth. Moreover, Hoes et al, and Vadiee and Martin [15,16] studied the influence of the "closed greenhouse" concept from the perspective of energy management.…”

Section: Introductionmentioning

confidence: 99%

“…TRNSYS is a versatile component-based program that provides tools to simulate both simple and complex energy flows in buildings. It was first developed in 1975 for the simulation of thermal systems but has since undergone continuous development to become a hybrid simulator by including photovoltaic, thermal solar, and other energy systems [13]. TRNSYS consists of a series of programs and add-ins that carry out simulation under user-defined conditions.…”

Section: Introductionmentioning

confidence: 99%

Development and Optimization of a Building Energy Simulation Model to Study the Effect of Greenhouse Design Parameters

Rasheed

Lee²,

Lee

2018

Energies

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Abstract:Energy management of the greenhouse is considered to be one of the most important challenges of greenhouse farming. Energy saving measures need considered, besides applying energy supplying techniques. To address this issue, a model was developed to simulate the thermal environment of a greenhouse using a Transient Systems Simulation Program (TRNSYS 17) as a building energy simulation (BES) platform. The model was calibrated by modifying the input parameters to minimize the uncertainties obtained from the results. Nash-Sutcliffe efficiency coefficients of 0.958 and 0.983 showed good agreement between the computed and experimental results. The proposed model was used to evaluate the effects of greenhouse design parameters, including roof shape, orientation, double-glazing, natural ventilation, coverings and their thickness, on its energy conservation capacity. It was found that the most suitable design for a greenhouse located in Daegu (latitude 35.53 • N, longitude 128.36 • E) South Korea would be east-west (E-W) oriented, with a gothic-shaped roof and double-glazing of PMMA (Polymethylmethacrylate) covering. Natural ventilation reduced the inside temperature of greenhouse, thereby reducing the energy demand of cooling. The model developed can help greenhouse farmers and researchers make pre-design decisions regarding greenhouse construction, taking their local environment and specific needs into consideration.

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“…The GSHP system transfers ground heat into buildings in winter, and emits the heat out of buildings in summer [187][188][189]. The GSHP system consists of a heat pump, a ground heat exchanger (GHE) to collect the heat from the ground, and a pump to circulate a thermal fluid between the heat pump and the GHE.…”

Section: Gshp Systemmentioning

confidence: 99%

A review on sustainable construction management strategies for monitoring, diagnosing, and retrofitting the building’s dynamic energy performance: Focused on the operation and maintenance phase

et al. 2015

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Geothermal heat pump in heating mode: Modeling and simulation on TRNSYS

Cited by 59 publications

References 14 publications

Development of Innovative Heating and Cooling Systems Using Renewable Energy Sources for Non-Residential Buildings

Development of Innovative Heating and Cooling Systems Using Renewable Energy Sources for Non-Residential Buildings

Development and Optimization of a Building Energy Simulation Model to Study the Effect of Greenhouse Design Parameters

A review on sustainable construction management strategies for monitoring, diagnosing, and retrofitting the building’s dynamic energy performance: Focused on the operation and maintenance phase

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