Exergy analysis of integrated photovoltaic thermal solar water heater under constant flow rate and constant collection temperature modes

2009 ◽  
Vol 86 (12) ◽  
pp. 2592-2597 ◽  
Author(s):  
Arvind Tiwari ◽  
Swapnil Dubey ◽  
G.S. Sandhu ◽  
M.S. Sodha ◽  
S.I. Anwar
Keyword(s):  
Flow Rate ◽  
Exergy Analysis ◽  
Solar Water Heater ◽  
Constant Flow ◽  
Water Heater ◽  
Constant Flow Rate ◽  
Solar Water ◽  
Collection Temperature

scholarly journals TO STUDY AND ANALYSIS OF SOLAR WATER HEATER USING VARIOUS MASS FLOW RATE

2020 ◽  
Vol 5 (3) ◽  
pp. 139-144
Author(s):  
Sunaina Sailani
Keyword(s):  
Solar Radiation ◽  
Mass Flow Rate ◽  
Flow Rate ◽  
Storage Tank ◽  
The Body ◽  
Solar Water Heater ◽  
Water Heater ◽  
Water Pipes ◽  
Solar Water ◽  
Circulating Water

Solar water heater is a device which is used for heating the water using of sun energy. This system is connected like as storage tank, centrifugal pump, pipes and glass. The circulating flexible water pipes are connected with the metallic pipe, which are assembled with the body. The solar radiation are achieving from sun and passing although glass and collector for the purpose of the heating the circulating water. In this way we are achieving the various temperatures using of circulating pump.

Measurement and simulation of flow rate in a water-in-glass evacuated tube solar water heater

Solar Energy ◽  
2005 ◽  
Vol 78 (2) ◽  
pp. 257-267 ◽  
Author(s):  
G.L. Morrison ◽  
I. Budihardjo ◽  
M. Behnia
Keyword(s):  
Flow Rate ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water ◽  
Evacuated Tube

scholarly journals EXPERIMENTAL STUDY OF FLAT PLATE SOLAR COLLECTORS WITH VARIOUS FLOW RATE OF WATER

2017 ◽  
Vol 5 (10) ◽  
pp. 112-116
Author(s):  
Anupras Shukla ◽  
Pushpraj Singh
Keyword(s):  
Experimental Study ◽  
Flat Plate ◽  
Flow Rate ◽  
Hot Water ◽  
Circular Pipe ◽  
Solar Water Heater ◽  
Solar Collectors ◽  
Flexible Pipe ◽  
Water Heater ◽  
Solar Water

In this paper, we are studying about solar water heater. The solar water heater are consisting of several components such as circular pipe, flexible pipe, and metallic container for water and circulating pump. We are analyzed the outlet temperatures of hot water using of various flow rate (in liters/ Minutes).

scholarly journals Flat plate solar water heater with closed-loop oscillating heat pipes

2021 ◽  
pp. 192-192
Author(s):  
Piyanun Charoensawan ◽  
Patomsok Wilaipon ◽  
Nopparat Seehawong
Keyword(s):  
Flat Plate ◽  
Flow Rate ◽  
Thermal Performance ◽  
Closed Loop ◽  
Water Flow Rate ◽  
Heat Pipes ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water ◽  
Irradiation Intensity

The flat plate solar water heater, using the closed-loop oscillating heat pipes (CLOHP), was constructed and investigated. The flat plate collector consisted of 10 pipes of CLOHP and the collector area was 1.5?1 m2. Each CLOHP was made of a copper capillary tube with a 1.5 mm inner diameter, a 2.8 mm outer diameter and had 20 turns. The distilled water was used as the working fluid with a filling ratio of 50% the tube?s total internal volume. The evaporator section of the CLOHP was placed on the absorber plate of the collector, and its condenser section was wrapped around the copper tube, in which hot water flowed through. The solar water heater was tested under the solar simulator with halogen lamps generating the uniform artificial solar energy. The irradiation intensity and the water flow rate of the solar water heater were adjusted. It was found that the thermal performance of the solar water heater clearly improved with an increase in the irradiation intensity from 480 to 1086 W/m2. However, the water flow rate in the range of 1.5-3.0 L/min, had a thermal performance that was slightly different. The thermal efficiency of 0.67 was archived at the high irradiation intensity of 947-1086 W/m2. Moreover, the mathematical model to predict the thermal efficiency of the flat plate solar water heater with the CLOHPs was obtained.

scholarly journals Design a Smart Faucet for Reducing the Water Wastage using IoT

2020 ◽  
Vol 8 (6) ◽  
pp. 1896-1901
Keyword(s):  
Flow Rate ◽  
Temperature Sensor ◽  
Mobile Application ◽  
Cold Water ◽  
Control Unit ◽  
Ball Valve ◽  
Hot Water ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water

Smart faucet aims to reduce the wastage of water that happened in the bathroom while using a solar water heater for a bath. It also prevents the hot water scalds due to high temperature in showers and hot water taps. It controls the hot water temperature by mixing required cold water to bring down to user-defined temperature. Users can set the temperature value in the control unit and switch it either by the switch or by using the mobile application using IoT. It takes time to reach hot water in tap from solar water heater due to long pipeline connections. So much water is wasted and time too. Users can switch the unit and make it ready for use before entering the bathroom by using the mobile application. Unless Coldwater stored in the hot water pipeline is underground water storage for recycling. Smart faucet uses NodeMCU as a controller, temperature sensor, motorized ball valves, solenoid valves, temperature knob and relays for switching the solenoid valves. NodeMCU is incorporated with the android application called ‘Blynk’. It receives and sends data to NodeMCU so that the user can monitor all the parameters like flow rate, temperature, the quantity of water used and control the unit from the mobile. The motorized ball valve is used to regulate the water flow rate. So that the ratio of hot water to cold water can be achieved. These adjustments are carried out by means of the control unit as per the decision taken according to the temperature sensor value. In the meantime, the temperature required by the user can be taken as input by means of a potentiometer. By considering the userdefined temperature and temperature sensor signal, the angle of hot water and cold-water ball valve will be modified automatically to achieve the required temperature. The solenoid valve will open and close the line for draining purposes and for use. It acts as a direction control valve. All the above processes will carry out simultaneously once the user switch ON the unit. Hence wastage of water will be stopped and valve automation is achieved.

scholarly journals An exergy analysis for overall hidden losses of energy in solar water heater

2020 ◽  
pp. 343-343
Author(s):  
Sathyakala Ponnusamy ◽  
Sundara Sai Gangadharan ◽  
Balaji Kalaiarasu
Keyword(s):  
Entropy Generation ◽  
Exergy Analysis ◽  
Glass Plate ◽  
Exergy Efficiency ◽  
Solar Water Heater ◽  
Exergy Destruction ◽  
Water Pipe ◽  
Water Heater ◽  
Collector Plate ◽  
Solar Water

This study investigates the hidden thermal losses of glass plate, collector plate, water pipe and storage tank of solar water heater in the process of energy conversion. The present non-conventional energy methods are insufficient, whereas the exergy analysis provides a remarkable solution. Thus, employing the exergy analysis, entropy generation, exergy destruction and exergy efficiency of each subsystem of solar water heater are computed. The obtained results showed that the entropy generation and exergy destruction are high during the heat transfer in each subsystem. Henceforth, the existing solar water heater design is modified placing hexagonal honeycomb structure between the glass plate and the collector plate and also water pipe is insulated to trap huge amount of solar energy. The proposed design exhibits improved exergy efficiency when compared with the existing model, which enhances the performance of the system.

Performance Analysis of Solar Water Heater in Multipurpose Solar Heating System

2014 ◽  
Vol 592-594 ◽  
pp. 1706-1713
Author(s):  
R. Venkatesh ◽  
W. Christraj
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Solar Radiation ◽  
Mass Flow Rate ◽  
Flow Rate ◽  
Thermal Performance ◽  
Winter Season ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water

Of all the renewable sources of energy available, solar thermal energy is the most abundant one and is available in both direct as well as indirect forms. In order to increase the thermal performance of solar collectors, the multipurpose solar collectors were investigated experimentally by the storage tank of the conventional solar water collector is modified as riser tubes and header. It is fitted in the bottom of the solar air heater as an absorber in the normal air heater. The thermal performance of thermosyphon flat plate solar water heater was investigated on both summer and winter seasons. The maximum daily average of 72.05%, 0.0316 kg/sm2and 0.873 m/s were recorded for the relative humidity, mass flow rate and wind speed at summer season respectively. Corresponding figure at for winter was 19.5 % 0.0295 kg/sm2and 0.722 m/s respectively. A minimum daily average of 11.23% and 0.384 m/s for the relative humidity and wind speed respectively. These results show that the mass flow rate obtained was a function of solar radiation and relative humidity. The less humid the ambient air becomes, the higher the heat gained by the system hence higher water flow rate. The maximum value of relative humidity obtained is due to low solar radiation on winter season. The heat removal factor (FR) and collector efficiency factor (Fo) were found to be higher for Multipurpose solar water heater as compared to conventional solar water heaters for summer as well as winter season. These factors for Multipurpose solar water heater were more during summer and winter.

scholarly journals Exergy Analysis of Serpentine Thermosyphon Solar Water Heater

2018 ◽  
Vol 8 (3) ◽  
pp. 391 ◽  
Author(s):  
Muhammad Hasan ◽  
Md. Mahadi ◽  
Takahiko Miyazaki ◽  
Shigeru Koyama ◽  
Kyaw Thu
Keyword(s):  
Exergy Analysis ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water
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