A multistage heat pump unit model for reducing energy consumption of space heating at low ambient temperatures

Kosoi, A. S.; Antipov, Y. A.; Shkarin, Kirill V.; Shatalov, I. K.; Соколов, Д. Д.

doi:10.1088/1757-899x/1100/1/012045

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…где = + k q q q ïî -удельный отвод теплоты в конденсаторе ( k q ) и переохладителе ( q ïî ), кДж/кг [12]; -тепловая производительность ТН, кВт.…”

Section: тракторы и сельхозмашиныunclassified

Economical efficiency of using a diesel-powered electric plant combined with an air heat pump

Frolov,

Shatalova,

Shkarin

et al. 2023

Tractors and Agricultural Machinery

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BACKGROUND: In settlements located in areas that do not have centralized electric and gas supply, the problems of energy supply are solved using low-power power plants based on heat engines. One of the main drawbacks of such units is the issue of fuel economy, given the cost of its delivery. In this paper, one of the ways to increase the efficiency of energy supply during the heating season in a cold climate is considered. AIMS: Increasing the economical efficiency of a diesel-powered electric plant with an air heat pump in conditions of low ambient teperature. METHODS: Simulation of operation conditions was performed in the MathCad software using the experimental data obtained at the department. RESULTS: Heating of outside air before entering the evaporator of the heat pump makes it possible to significantly increase the conversion coefficient and thus expand the boundaries of application of air-source heat pumps in cold climates. CONCLUSIONS: The combined operation of the diesel power plant with the air heat pump makes it possible to provide a single settlement with electricity as well as to supply it with thermal energy for the needs of heating and hot water supply. With the diesel engine efficiency equal to 37%, the unit efficiency with the heat pump increases to 57% at an ambient temperature of 15C (288 K). The use of air heating at the inlet to the heat pump evaporator increases the fuel use rate by 1214% due to the heat of engine and oil cooling.

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Section: тракторы и сельхозмашиныunclassified

Economical efficiency of using a diesel-powered electric plant combined with an air heat pump

Frolov,

Shatalova,

Shkarin

et al. 2023

Tractors and Agricultural Machinery

View full text Add to dashboard Cite

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Evaluation of the Performance of a Combined Heat Pump System with a Photovoltaic Collector Integrated with a Roof for a Zero-Energy Building in Tehran

Asadi

Jafarkazemi

Abyaneh

2022

Modares Mechanical Engineering

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The concept of Zero Energy Building has been introduced globally to reduce energy consumption and carbon emissions in the building sector. Renewable energy systems such as Solar Thermal collectors, Photovoltaic collectors, and Heat Pumps are used to implement ZEBs. This study proposes a Building Integrated Photovoltaic Thermal-Air Source Heat Pump (BIPVT-ASHP) to realize ZEB in a small-scale building. To evaluate the performance of the system, a BIPVT-ASHP hybrid system model was designed, and also the building load model was defined based on the actual building conditions. Then, the heating and cooling performance of the BIPVT-ASHP system was dynamically simulated for one year using TRNSYS software. Then the system was numerically evaluated from energy, economic and environmental perspectives. According to the results of this study, for this system, the initial non-renewable energy consumption was 1.29 kWh/m2 per year, which was less than the heating energy threshold for the ZEB, and the proposed system met well the ZEB conditions. In addition, it was shown that for a given area, photovoltaic/thermal technology leads to a further reduction in non-renewable primary energy consumption but less solar thermal energy production compared to traditional separate production using photovoltaic collectors.

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A multistage heat pump unit model for reducing energy consumption of space heating at low ambient temperatures

Cited by 2 publications

References 3 publications

Economical efficiency of using a diesel-powered electric plant combined with an air heat pump

Economical efficiency of using a diesel-powered electric plant combined with an air heat pump

Evaluation of the Performance of a Combined Heat Pump System with a Photovoltaic Collector Integrated with a Roof for a Zero-Energy Building in Tehran

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