scholarly journals EXPERIMENTAL VALIDATION OF A COMPUTATIONAL PROGRAM FOR SIMULATING HYBRID SOLAR AND GAS WATER HEATING SYSTEMS

2007 ◽  
Vol 6 (2) ◽  
pp. 19
Author(s):  
J. M. S. Lafay ◽  
A. Krenzinger
Keyword(s):  
Experimental Data ◽  
Solar Energy ◽  
Computer Program ◽  
Solar Collector ◽  
Experimental Validation ◽  
Simulation Program ◽  
Water Heating ◽  
Heating Systems ◽  
Experimental Systems ◽  
Computational Program

This work presents the methodology and results of the validation of a computer program for the simulation of water heating systems combining solar energy and gas. Two experimental systems, named series and parallel, were assembled. These systems have the same components, differing on how they are connected. All the components were individually characterized and their parameters determined. Simulations of the behavior of the thermal tank, gas heater and solar collector were performed and confronted to experimental data. The results show that the simulation program “AQUESOLGAS” can accurately describe the behavior of water heating systems with solar energy and gas.

Designing a novel solar-assisted heat pump system with modification of a thermal energy storage unit

2019 ◽  
Vol 233 (5) ◽  
pp. 588-603 ◽  
Author(s):  
Mustafa Aktaş ◽  
Meltem Koşan ◽  
Erhan Arslan ◽  
Azim Doğuş Tuncer
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Heat Pump ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Solar Collector ◽  
Working Fluid ◽  
Storage Unit ◽  
Heating Systems ◽  
Energy Storage Unit

The integrated usage of solar energy systems, heat pump applications, and thermal energy storage units is an effective way for heating systems due to their sustainability and stability in operations. In this study, a novel direct solar-assisted heat pump with thermal energy system has been designed which uses the solar collector as the evaporator of the heat pump. Besides, two-dimensional transient numeric analyses have been conducted for the thermal energy storage unit using the ANSYS Fluent 16.2 commercial software package. With this direct system, the heat required for heating systems is supplied from the condenser with the heat received from the solar collector of the working fluid. For an effective and high performance system, the solar collector is designed as a double-pass which provided superheating of the working fluid. It is aimed to store the surplus energy from the solar energy in the thermal energy storage unit and to operate the system continuously and efficiently in both sunny and overcast weather conditions. Furthermore, the system has been analyzed theoretically and the results show that coefficient of performance may improve. As a result, this newly designed system can be successfully applied for thermal applications.

scholarly journals Experimental Validation of Forced Circulation of Solar Water Heating Systems in TRNSYS

2014 ◽  
Vol 57 ◽  
pp. 2477-2486 ◽  
Author(s):  
M.J.R. Abdunnabi ◽  
K.M.A. Alakder ◽  
N.A. Alkishriwi ◽  
S.M. Abughres
Keyword(s):  
Experimental Validation ◽  
Water Heating ◽  
Forced Circulation ◽  
Heating Systems ◽  
Solar Water Heating ◽  
Solar Water

Numerical simulation on solar collector and cascade heat pump combi water heating systems in Kazakhstan climates

2020 ◽  
Vol 145 ◽  
pp. 1222-1234 ◽  
Author(s):  
Ye. Yerdesh ◽  
Z. Abdulina ◽  
A. Aliuly ◽  
Ye. Belyayev ◽  
M. Mohanraj ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Heat Pump ◽  
Solar Collector ◽  
Water Heating ◽  
Heating Systems

scholarly journals Performance Analysis of Water Heating System by Using Double Glazed Flat Plate Solar Water Heater

Teknomekanik ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
Andika Putra ◽  
Arwizet K ◽  
Yolli Fernanda ◽  
Delima Yanti Sari
Keyword(s):  
Solar Energy ◽  
Flat Plate ◽  
Thermal Energy ◽  
Solar Collector ◽  
Heating Process ◽  
Inlet Temperature ◽  
Outer Diameter ◽  
Pipe Material ◽  
Solar Thermal Energy ◽  
Water Heating

Nowadays, the use of solar energy is incredibly important to be increased since solar energy is renewable energy and also does not cause pollution. To harness solar energy, a solar collector device is needed to convert solar energy into heat energy. This study aimed to analyze the heat transfer in the flat plate solar collector which is used as a source of thermal energy in the water heating process for bathing. A double-glazed solar collector was used to absorb solar thermal energy and then transferred it to a water pipe. The pipe material used copper which has a very high conductivity value with an outer diameter of 15.7 mm. The plate collector used aluminium plates because they have high thermal conductivity. The dimensions of the collector frame were 150 cm long, 80 cm wide and 80 cm high. The collector frame was made of wood and covered with an insulator from coconut fibre with a thickness of 8 cm, with a tilt angle of 15˚. Based on the experimental process, the collector temperature was taken by using a thermocouple in order to heat the water which the inlet temperature in a bucket was 28˚C and the outlet water temperature during the experiment was 40˚C.

Experimental Analysis and Thermal Behavior of Conventional Flat Plate Collector and Sun Point Collector of 1 m2 Area

2014 ◽  
Vol 592-594 ◽  
pp. 1852-1858 ◽  
Author(s):  
D. Sakthivadivel ◽  
S. Iniyan
Keyword(s):  
Solar Energy ◽  
Flat Plate ◽  
Comparative Test ◽  
Solar Heating ◽  
Water Heating ◽  
Heating Systems ◽  
Different Types ◽  
Flat Plate Collector ◽  
Reduced Temperature ◽  
Domestic Purpose

India has a huge potential of solar energy as it is gifted with 300 sunny days in most part of the country. The simplest form of harvesting solar energy is to use it for water heating. Most of the solar heating systems developed before were big in size, uses more space, difficult to install and use it for domestic purpose. To make the installation of solar heating systems simple and compact with adequate improvement in performance, a novel sun point collector has been developed. In this paper reduced land use of solar water heating systems by using sun point collector is analysed. A new comparative test on two different types of conventional solar flat plate collector (FPC) and sun point collector (SPC) was also investigated by conducting experiments. A standard glazed flat plate collector and a novel sun point collector are installed in parallel and tested at same working conditions. Results are also presented in terms of daily efficiency versus daily average reduced temperature difference: this allows representing the comparative characteristics of the two collectors when operating under same conditions.

A Markov model of solar energy space and hot water heating systems

Solar Energy ◽  
1979 ◽  
Vol 22 (3) ◽  
pp. 211-219 ◽  
Author(s):  
Gerard F. Lameiro ◽  
William S. Duff
Keyword(s):  
Solar Energy ◽  
Markov Model ◽  
Energy Space ◽  
Hot Water ◽  
Water Heating ◽  
Heating Systems

scholarly journals Towards Strategic Plan for Wide Spreading of Solar Water Heaters in Libya

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
M.J.R Abdunnabi ◽  
M. A Musa
Keyword(s):  
Solar Energy ◽  
Public Awareness ◽  
Strategic Plan ◽  
Water Heating ◽  
Heating Systems ◽  
Solar Water Heating ◽  
Solar Water ◽  
Water Heaters ◽  
Excellent Research ◽  
Solar Water Heaters

Solar water heaters have been in use for decades in many countries in the world that have less favorable climatic conditions for solar energy as compared with Libya. However, still there is no usage of such technologies in the country. This could be attributed to many factors including, among others, lack of clear policy and/or serious plans to establish such technology, cheap prices of conventional energy, and lack of environmental awareness.The Center for Solar Energy Research and Studies (CSERS) of Libya has developed an excellent research and development program on national scale for domestic solar water heating systems. The national program started in the early 1990’s aiming at increasing public awareness. The program utilizes different ways such as pilot projects, studies, workshops, and reports to convince people and decision- makers of Libya about this subject and its benefits.This paper attempts to suggest a strategic plan (win-win situation between government and people) for encouraging and helping wide spread (replacement) of solar water heaters nationwide based on economic and environmental pointers in favour of the replacement.The suggested strategic plan is to provide 25% of existing houses in 2013 with solar water heating systems by 2022, with governmental subsidy of up to 65% of the system cost. The study has shown that every L.D. paid by the government will return with at least 2 L.D. after 10 years of investment without considering the money saved from the fuel savings, power plant installations to fulfill the demand, and the environmental benefits.

scholarly journals Prototype of lineal solar collector Fresnel

2020 ◽  
Vol 14 (1) ◽  
pp. 35-42
Author(s):  
Brayan Eduardo Tarazona-Romero ◽  
Álvaro Campos-Celador ◽  
Yecid Alfonso Muñoz-Maldonado ◽  
Camilo Leonardo Sandoval-Rodríguez ◽  
Javier Gonzalo Ascanio-Villabona
Keyword(s):  
Solar Collector ◽  
Fossil Fuels ◽  
Field Tests ◽  
Heat Radiation ◽  
Water Heating ◽  
Steam Generators ◽  
Heating Systems ◽  
Solar Tracking ◽  
Collector Temperature ◽  
Technical Specifications

The development of a prototype linear solar collector Type Fresnel, has a purpose the use of direct solar heat radiation for water heating and/or steam production, as an alternative to supply conventional water heating systems or steam generators, which consume energy from fossil fuels. For the development of the system, used the solar radiation of the UTS, located in Bucaramanga, Colombia, is identify the mathematical models to perform the sizing, then materials based on technical specifications and availability in Colombia, in order to perform the assembly and field tests, measuring the ambient and in the collector temperature to determine the efficiency of the model. It should be noted that, the model presented does not have a control system for flow, temperature, pressure and level, it has no solar tracking of any kind; Its movement was done manually with each reflex. Finally, the model does not have a hydraulic system forced, and has a preheater at the entry of the concentration point.

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