Heat pump condenser and desuperheater integrated into a storage tank: Model development and comparison with measurements

Heinz, Andreas; Lerch, Werner; Heimrath, Richard

doi:10.1016/j.applthermaleng.2016.04.010

Cited by 13 publications

(4 citation statements)

References 18 publications

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“…Thermodynamic properties were taken from the CoolProp library [24]. A detailed description of the system model can also be found in [13,14]. The performance indicators were derived from the dynamic simulation when the system is in steady-state or when the SoC reached 50% for heating and cooling, respectively.…”

Section: Simulation Modelsmentioning

confidence: 99%

“…The sensible energy which is available at a higher temperature level as the condensing temperature is described as a desuperheater, which is usually an additional small heat exchanger that is installed directly after the compressor and before the actual condenser of the HP. The desuperheater can either be integrated directly into a stratified storage, as in [13], or connected via a secondary water cycle to a DHW storage, as in [14].…”

Section: Introductionmentioning

confidence: 99%

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Techno-Economic Analysis of a Heat Pump Cycle Including a Three-Media Refrigerant/Phase Change Material/Water Heat Exchanger in the Hot Superheated Section for Efficient Domestic Hot Water Generation

et al. 2020

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Integration of a three-media refrigerant/phase change material (PCM)/water heat exchanger (RPW-HEX) in the hot superheated section of a heat pump (HP) system is a promising approach to save energy for domestic hot water (DHW) generation in multi-family houses. The RPW-HEX works as a desuperheater and as a latent thermal energy storage in the system. The latent thermal energy storage is charged during heating and cooling operation and discharged for DHW production. For this purpose, the water side of the RPW-HEX is connected to decentralized DHW storage devices. DHW consumption, building standards and climate, energy prices, material costs, and production costs are the constraints for the selection of the optimal storage size and RPW-HEX design. This contribution presents the techno-economic analysis of the RPW-HEX integrated into an R32 air source HP. With the aid of experimentally validated dynamic computer models, the optimal sizing of the RPW-HEX storage is discussed to maximize energy savings and to minimize the investment costs. The results are discussed in the context of a return of investment analysis, practical implementation aspects and energetic potential of the novel technology.

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Section: Simulation Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Techno-Economic Analysis of a Heat Pump Cycle Including a Three-Media Refrigerant/Phase Change Material/Water Heat Exchanger in the Hot Superheated Section for Efficient Domestic Hot Water Generation

et al. 2020

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“…The condensation performance increased when the mass flow rate of the cooling water increased appropriately, while the temperature of the cooling water did not play an important role. Heinz et al [15] developed a numerical model for a heat pump condenser and desuperheater integrated into a storage tank to enable design calculations of the condenser and the superheater and annual simulations of the system integrated into a whole heating system. The results simulated by the model agreed with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of heat transfer effects and aerodynamic noise reduction in superheated steam flow passing a temperature and pressure regulation valve

Qian

Chen

Jin

et al. 2020

Numerical Heat Transfer, Part A: Applications

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Steam is a common medium in thermal engineering. When it flows through a throttling element, the aerodynamic noise may occur due to the disturbance. In this investigation, superheated steam flowing through a Venturi tube, one of the main parts in a temperature and pressure regulation valve, at different thermal conditions is studied to analyze to effects of heat transfer on the acoustic power. With a high temperature and a low pressure, the superheated steam is treated as ideal gas. The flow velocity is high, so the k-epsilon turbulent model is used, with the compressible steam. The results show that under the adiabatic condition, the acoustic power mainly influenced by the turbulent characteristics, such as the dissipation rate and the turbulent kinetic energy. Comparing the acoustic power levels at different thermal conditions, it is found that a lower temperature results to a lower acoustic power.

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“…A model development and validation for a HP with R410A in which the condenser and DS are integrated into a storage tank was carried out by Heinz et al (2016). The same research group (Hengel et al, 2016) studied different control strategies and types of implementation of a DS for DHW production for a similar system.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a R407C liquid-to-water heat pump: Effect of a liquid–vapor heat exchanger and domestic hot water production

Ortega

Sieres

Cerdeira

et al. 2019

International Journal of Refrigeration

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Highlights  An experimental analysis of a liquid-to-water heat pump with R407C is presented  Experimental results for space heating with domestic hot water production (DHW)  The effect of using or not a liquid-vapor heat exchanger (LVHEx) is evaluated  DHW and LVHEx affects refrigerant charge distribution inside the heat pump  DHW production and LVHEx affects the heat pump performance

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Heat pump condenser and desuperheater integrated into a storage tank: Model development and comparison with measurements

Cited by 13 publications

References 18 publications

Techno-Economic Analysis of a Heat Pump Cycle Including a Three-Media Refrigerant/Phase Change Material/Water Heat Exchanger in the Hot Superheated Section for Efficient Domestic Hot Water Generation

Techno-Economic Analysis of a Heat Pump Cycle Including a Three-Media Refrigerant/Phase Change Material/Water Heat Exchanger in the Hot Superheated Section for Efficient Domestic Hot Water Generation

A numerical study of heat transfer effects and aerodynamic noise reduction in superheated steam flow passing a temperature and pressure regulation valve

Performance analysis of a R407C liquid-to-water heat pump: Effect of a liquid–vapor heat exchanger and domestic hot water production

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