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Heat pump


The energy performance of a heat pump system is influenced by a number of factors. For example, these may include design elements such as the heat pump capacity, the heating seasonal efficiency and/or the cooling seasonal coefficient of performance (COP), as well as the source of heat and/or "cold" (i.e. air or ground). In the case of ground-source (or geothermal) heat pumps (GSHP), the energy performance is also influenced by the ground heat exchanger (GHX) type (i.e. horizontal or vertical ground-coupled closed loop or groundwater) and length, as well as the site conditions such as the soil type and the earth temperature. Other factors include the size and the type of the heating/cooling load (i.e. space and/or process heating/cooling, single or multiple zones, single or multiple buildings). The energy performance of a district heating/cooling (multiple buildings) system will also be influenced by the design supply and return temperatures, and the distribution line pipe sizing. Refer to the following schematics for more information: Refer to the following schematics for more information: Ground-Source Heat Pump - Vertical Closed Loop, Ground-Source Heat Pump - Horizontal Closed Loop, Ground-Source Heat Pump - Groundwater, Air-Source Heat Pump.

Software & Data
The RETScreen Software Heat Pump Model can be used worldwide to evaluate the energy production and savings, costs, emission reductions, financial viability and risk for heat pump projects, ranging in size from air-source heat pump (ASHP) networks in commercial and institutional buildings, to horizontal ground-coupled heat pumps (GCHP) to heat and/or cool space and/or processes in institutional buildings and industrial facilities, to combined heating and cooling using vertical boreholes for residential, commercial and institutional buildings and industrial facilities, to open loop or standing well groundwater heat pumps (GWHP) for residential systems. In addition, both the size and cost of the ground heat exchanger can be calculated using a convenient Ground heat exchanger tool. The software (available in multiple languages) also includes product, project and climate databases, and a detailed user manual.

Click here to download RETScreen Suite

Training material
RETScreen - Ground-Source Heat Pump Project - Presentation slides (6.08 MB)
RETScreen - Ground-Source Heat Pump Project - Voice & slides - 1/4 (1.90 MB)
RETScreen - Ground-Source Heat Pump Project - Voice & slides - 2/4 (1.58 MB)
RETScreen - Ground-Source Heat Pump Project - Voice & slides - 3/4 (1.72 MB)
RETScreen - Ground-Source Heat Pump Project - Voice & slides - 4/4 (1.57 MB)
RETScreen - Ground-Source Heat Pump Project Analysis - Speaker's notes

e-Textbook / Guides
RETScreen - Ground-Source Heat Pump Project - e-Textbook chapter (2.28 MB)
RETScreen - Ground-Source Heat Pump Project (V3) - User manual (725 KB)
Refrigeration and Heat Pumps - Guide (3.27 MB)

Case studies / Templates
Combined heating & cooling - Heat pump - Air-source - Commercial / United States of America
Combined heating & cooling - Heat pump - Air-source - House
Combined heating & cooling - Heat pump - Ground-source - Office / Canada
Combined heating & cooling - Heat pump - Ground-source - Office / Germany
Combined heating & cooling - Heat pump - Ground-source - Office - Storage room / Canada
Combined heating & cooling - Heat pump - Ground-source - Office - Warehouse / Canada
Combined heating & cooling - Heat pump - Ground-source - Penitentiary / Canada
Combined heating & cooling - Heat pump - Ground-source - Residential / United States of America
Combined heating & cooling - Heat pump - Ground-source - School / Canada
Combined heating & cooling - Heat pump - Ground-source - School / United States of America
Combined heating & cooling - Heat pump - Ground-source - Warehouse


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