Two software tools for facilitating the choice of ground source heat pumps by stakeholders and designers

For promoting the diffusion of GSHP and making the technology more accessible to the general public, in the H2020 research project “CHeap and Efficient APplication of reliable Ground Source Heat exchangers and PumpS” (acronym Cheap-GSHPs) a tool for sizing these systems has been developed, as well as a Decision Support System (DSS) able to assist the user in the preliminary design of the most suitable configuration. For all these tools a common platform has been carried out considering climatic conditions, energy demand of buildings, ground thermal properties, heat pump solutions repository, as well as renewable energy database to use in synergy with the GSHPs. Since the aims of the tools are different, there are different approaches. The design tool is mainly addressed to designers. The calculation may be done in two ways: with a simplified method based on the ASHRAE approach and with a detailed calculation based on the numerical tool CaRM (Capacity-Resistance method). The DSS final aim is to support decision-making, by providing the stakeholders at all the level with a series of scenario. The Cheap-GSHPs project has developed a DSS tool aimed at accelerating the decision-making process of designers and building owners as well as increasing market share of the Cheap-GSHPs technologies. Hence the DSS generates different possible solutions based on a defined general problem, identifying the optimal solution. Both tools are presented in the paper, showing the potentialities provided by both software.

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A European Database of Building Energy Profiles to Support the Design of Ground Source Heat Pumps

Energies ◽

10.3390/en12132496 ◽

2019 ◽

Vol 12 (13) ◽

pp. 2496 ◽

Cited By ~ 7

Author(s):

Laura Carnieletto ◽

Borja Badenes ◽

Marco Belliardi ◽

Adriana Bernardi ◽

Samantha Graci ◽

...

Keyword(s):

Heat Pump ◽

Energy Demand ◽

Residential Buildings ◽

Building Energy ◽

Heat Pumps ◽

Climatic Conditions ◽

Ground Source Heat Pumps ◽

Heating And Cooling ◽

Energy Profiles ◽

Ground Source

The design of ground source heat pumps is a fundamental step to ensure the high energy efficiency of heat pump systems throughout their operating years. To enhance the diffusion of ground source heat pump systems, two different tools are developed in the H2020 research project named, “Cheap GSHPs”: A design tool and a decision support system. In both cases, the energy demand of the buildings may not be calculated by the user. The main input data, to evaluate the size of the borehole heat exchangers, is the building energy demand. This paper presents a methodology to correlate energy demand, building typologies, and climatic conditions for different types of residential buildings. Rather than envelope properties, three insulation levels have been considered in different climatic conditions to set up a database of energy profiles. Analyzing European climatic test reference years, 23 locations have been considered. For each location, the overall energy and the mean hourly monthly energy profiles for heating and cooling have been calculated. Pre-calculated profiles are needed to size generation systems and, in particular, ground source heat pumps. For this reason, correlations based on the degree days for heating and cooling demand have been found in order to generalize the results for different buildings. These correlations depend on the Köppen–Geiger climate scale.

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Analysis of ground thermal potential reduction and thermal interaction between boreholes during operation of ground source heat pump in Moscow city environments

E3S Web of Conferences ◽

10.1051/e3sconf/202128902006 ◽

2021 ◽

Vol 289 ◽

pp. 02006

Author(s):

Elizaveta Tyabut ◽

Ivan Sokolov ◽

Artem Ryzhenkov

Keyword(s):

Heat Pump ◽

Mutual Influence ◽

Energy Resource ◽

Heat Pumps ◽

Geothermal Field ◽

Climatic Conditions ◽

Ground Source Heat Pumps ◽

Promising Alternative ◽

Ground Source ◽

Moscow City

Geothermal energy is a renewable energy resource. Nowadays it can be considered as a promising alternative to various fossil fuels. Ground source heat pumps are efficient installations enabling the intensive use of underground energy for heating and cooling of modern residential and commercial buildings. However, climatic conditions often limit the use of this type of installation to a certain extent. This paper presents a description of an existing system comprising a liquid-toliquid heat pump and a geothermal field consisting of 4 boreholes. The system is used to investigate the intensity of ground temperature potential decrease in winter and its recovery in summer in the Moscow city environment with a detailed study of the properties of individual soil layers, as well as to study the mutual influence of boreholes on each other, represented by the conditional radius of thermal influence of individual boreholes. Graphs of soil temperature changes at different depths are presented.

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Evaluation of Ground Source Heat Pump Energy, Demand, and Greenhouse Potential in Colorado Residential Buildings

ASME 2010 4th International Conference on Energy Sustainability, Volume 1 ◽

10.1115/es2010-90355 ◽

2010 ◽

Cited By ~ 1

Author(s):

Daniel Studer ◽

Moncef Krarti

Keyword(s):

Heat Pump ◽

Energy Demand ◽

Residential Buildings ◽

Pump Energy ◽

Hvac Systems ◽

Heat Pumps ◽

Ground Source Heat Pump ◽

Ground Source Heat Pumps ◽

Vertical Well ◽

Ground Source

This paper summarizes the results of a detailed energy analysis carried out for a typical Colorado residence using three different HVAC systems for 10 distinct locations in Colorado. The HVAC systems considered in the analysis include: • 78% efficient furnace with a 13 SEER air conditioner; • Vertical well ground source heat pump with a heating COP of 3.5 and a cooling EER of 17.1; • Slinky ground source heat pump with a heating COP of 3.5 and a cooling EER of 17.1. The results of the analysis indicate that relative to the conventional systems, ground source heat pumps (GSHPs) offer several benefits including lower annual energy costs, electrical peak demand, and carbon emissions. However, GSHPs use more electrical energy use. Specifically, it was found that relative to a 78 AFUE furnace / 13 SEER AC system, in all locations both GSHPs, vertical well and slinky, show on average a 41.2% increase in electricity use, a 10% decrease in energy cost, a 4.5% decrease in CO2 emissions, and a 16.8% average decrease in peak summer electric demand.

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Analysis of the Possibilities of Using a Heat Pump for Greenhouse Heating in Polish Climatic Conditions—A Case Study

Sustainability ◽

10.3390/su10103483 ◽

2018 ◽

Vol 10 (10) ◽

pp. 3483 ◽

Cited By ~ 5

Author(s):

Artur Nemś ◽

Magdalena Nemś ◽

Klaudia Świder

Keyword(s):

Heat Pump ◽

Primary Source ◽

Thermal Conditions ◽

Heating System ◽

Heat Pumps ◽

Climatic Conditions ◽

Ground Source Heat Pumps ◽

Ground Source ◽

Pollution Emissions

This article presents an analysis of selecting a seasonal heating system for an existing greenhouse. The analyzed object is located in Poland near Wroclaw, where summer flowers are grown. Appropriate thermal conditions must be ensured continuously for four heating months. The primary source of heat in the examined flower greenhouse was a coal-fired furnace. The analysis presented in the article shows a method of thermal balancing the object, determining heat demands in the analyzed period using the experiment plan, and also selecting a new heating system in the form of a heat pump. The analysis of the operation of the heating system was performed for air and ground source heat pumps to determine the profitability of their application in Polish climatic conditions. An economic analysis was also included and the investment impact on pollution emissions was calculated.

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