A simulation study on performance improvement of solar assisted heat pump hot water system by novel controllable crystallization of supercooled PCMs

Kutlu, Çağrı; Zhang, Yanan; Elmer, Theo; Su, Yuehong; Riffat, Saffa

doi:10.1016/j.renene.2020.01.090

Cited by 52 publications

(10 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The installation of this system is very low cost compared to the other power generation system installation. The power generation cost for this system is nil [26]. There is no cost is spending for power generation but installation cost is needed.…”

Section: Solar Panelmentioning

confidence: 99%

Mathematic Model Design Of Solar Pumping For Drip Irrigation Systems

Mhamdi¹

2021

TURCOMAT

View full text Add to dashboard Cite

The use of solar energy in isolated sites for different applications, such as water pumping, is of primary interest to people in developing countries who do not have safe access to water drinking. But photovoltaic generators have two major drawbacks that are a low yield and a high blow. In order to increase the performance of these systems. Proper adaptation between the solar generator and the load reduces the cost of installation. The choice of an energy system must obey and comply with certain rules. The selected energy system must show as a preliminary its competitiveness with respect to other systems for the same rendered service. The present study have a propose the modeling, simulation, sizing and realization of a photovoltaic pumping system operating over the sun. This system consists of a set of interacting elements; namely the photovoltaic panels, the voltage inverter, the asynchronous motor, the centrifugal pump and the hydraulic circuit.

show abstract

Section: Solar Panelmentioning

confidence: 99%

Mathematic Model Design Of Solar Pumping For Drip Irrigation Systems

Mhamdi¹

2021

TURCOMAT

View full text Add to dashboard Cite

show abstract

“…[107]- [109]. The rest of this section will first review the PV/T enhanced systems, systems employing micro-channel heat-pipes and PCM storage in a chronological order, and then discuss all other types of SAHP systems investigated in the fourth and last quarter of the 21 st century (2015-2020).…”

Section: Fourth Quarter: Tomentioning

confidence: 99%

A chronological review of advances in solar assisted heat pump technology in 21st century

Бадией

Akhlaghi

Zhao

et al. 2020

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

This paper presents a comprehensive review on developments and advances of Solar Assisted Heat Pump technology reported in 21 st century. Combination of thermal and photovoltaic solar collectors with heat pumps has been widely used in recent decades for simultaneous heat, hot water and power generation for a broad range of applications, from providing domestic and commercial buildings with heat and power to manufacturing and agricultural applications. This review critically analyses the research reported in past two decades with particular attention to the works with substantial importance for future development of the technology. Four distinctive investigation periods were considered and key developments and dominant technologies at each period were reported. The main novelties and breakthroughs in solar assisted heat pump technology, as identified by this review, are: (1) The ban on R-12 refrigerant which lead to dominance of R-134A refrigerant for a wide range of systems and applications, (2) Increasing interest in Solar-assisted Ground Source Heat Pumps following the technological advances that made the utilization of such systems cost effective, (3) Advances in numerical analysis methods and use of Artificial Intelligence applications in investigating performance and effectiveness of various systems, and (4) Integrating the Photovoltaic/Thermal collectors with heat pumps for simultaneous heat and power generation resulting in improved performance and reliable operation of systems under severe operating conditions. Highlights• Four distinctive investigation periods from 2000 to 2020 are considered • Key developments and prevailing breakthroughs at each period are presented • Advantages and shortcomings of each study are discussed • Different types of SAHPs, applications, and performances are investigated

show abstract

“…2 However, due to drawbacks such as large dispersion, instability and low efficiency, the utilization efficiency of solar energy is still limited. 3 Therefore, incorporating PCM into the water storage tank was proposed and investigated to increase the heat capacity, 4 reduce the tank volume, 5 prolong the effective heat discharge time 6 and strengthen the thermal stratification. [7][8][9][10] In the last two decades, many studies have focused on the configuration optimization, the heat charge and discharge performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulated optimization study on dynamic heat discharge performance of multi-units water tank with PCM

Jin

Zhang

Ding

et al. 2020

Indoor and Built Environment

View full text Add to dashboard Cite

The water tank is most commonly a crucial energy storage device of a solar heating system. However, few existing studies have focused on the quantitative analysis of the heat discharge process of a square water tank. In this paper, a multi-units water tank with phase change material (MWT-PCM) was proposed. The dynamic heat discharge performances of the MWT-PCM and the conventional water tank both with 235.8 dm 3 were compared experimentally. A validated mathematical model was established to optimize the configuration of the MWT-PCM. Results demonstrated that: (1) The water temperature of both tanks had a sharp decline at the initial stage of the heat discharge process. (2) The instantaneous residual effective heat and the instantaneous heat supply of the WMT-PCM were 127% and 45.6% higher than that of the conventional water tank on average, respectively. (3) Due to the PCM, the effective heat discharge time could be prolonged by about 90 min. (4) When the PCM was arranged in a multi-unit manner, a small flow rate operation was recommended. However, the effect of changes in the total mass of the PCM was not obvious, and thus, for the given total mass, a smaller pipe diameter was recommended.

show abstract

A simulation study on performance improvement of solar assisted heat pump hot water system by novel controllable crystallization of supercooled PCMs

Cited by 52 publications

References 35 publications

Mathematic Model Design Of Solar Pumping For Drip Irrigation Systems

Mathematic Model Design Of Solar Pumping For Drip Irrigation Systems

A chronological review of advances in solar assisted heat pump technology in 21st century

Experimental and simulated optimization study on dynamic heat discharge performance of multi-units water tank with PCM

Contact Info

Product

Resources

About