Experimental investigation and heat loss analysis of a three-coil solar cavity receiver of parabolic dish collector under wind condition

2021 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Nitin P. Gulhane ◽  
Ramola Sinha
Keyword(s):  
Experimental Investigation ◽  
Heat Loss ◽  
Wind Condition ◽  
Loss Analysis ◽  
Parabolic Dish

scholarly journals The Wind Test on Heat Loss from Three Coil Cavity Receiver for a Parabolic Dish Collector

2019 ◽  
Vol 128 ◽  
pp. 01006 ◽  
Author(s):  
Ramola Sinha ◽  
Nitin P. Gulhane ◽  
Paweł Ocłoń ◽  
Jan Taler ◽  
Rahimi Gorji
Keyword(s):  
Heat Loss ◽  
Total Heat ◽  
Inlet Temperature ◽  
Fluid Temperature ◽  
Wind Condition ◽  
Horizontal Position ◽  
Total Heat Loss ◽  
Maximum Heat ◽  
Mean Temperature ◽  
Parabolic Dish

The heat loss from cavity receiver in parabolic dish system determines the efficiency and cost effectiveness of the system. A modified three coil solar cavity receiver of inner wall area approximately three times of single coil receiver, is experimentally investigated to study the effect of fluid inlet temperature (Tfi=50°C to 75 °C) and cavity inclination angle (θ = 0° to 90°) on the heat loss from receiver under wind condition for head on wind and side on wind velocity at 3 m/s. Overall it was found that the natural and forced convection total heat loss increases with increase in mean fluid temperature. The combined heat loss decreases sharply with the increase in cavity inclination and observed to be maximum for horizontal position of receiver and minimum with the receiver facing vertically downward for all investigations. The maximum heat lossin wind test (V=3m/s) is 1045 W at θ=0° cavity inclination at mean fluid temperature 68 °C and minimum at 173 W θ=90° at 53°C. Total heat loss from the receiver under wind condition (V=3m/s) is up to 25% higher(1.25 times at 0° inclination) than without wind at mean fluid temperature ~70°C and minimum 19.64 % (1.2 times at 90° inclination) in mean temperature ~50 °C . In horizontal position of the receiver (θ=0°), the totalheat loss by head on wind is about 1.23 times (18% higher ) as compared to side on wind (at fluid mean temperature ~ 70°C). For receiver facing downward (θ=90°), for head-on wind, total heat loss is approximately the same as that for side-on wind.

Combined heat loss analysis of solar parabolic dish – modified cavity receiver for superheated steam generation

Solar Energy ◽  
2015 ◽  
Vol 121 ◽  
pp. 78-93 ◽  
Author(s):  
K.S. Reddy ◽  
T. Srihari Vikram ◽  
G. Veershetty
Keyword(s):  
Heat Loss ◽  
Superheated Steam ◽  
Steam Generation ◽  
Loss Analysis ◽  
Parabolic Dish

Heat loss analysis: An approach toward the revival of parabolic dish type solar cooker

2018 ◽  
Vol 15 (2) ◽  
pp. 96-105 ◽  
Author(s):  
Arun Kumar ◽  
S.K. Shukla ◽  
Abhishek Kumar
Keyword(s):  
Heat Loss ◽  
Loss Analysis ◽  
Parabolic Dish

HEAT LOSS ANALYSIS AND OPTIMIZATION OF HOUSEHOLD SOLAR HEATING SYSTEM

2019 ◽  
Vol 50 (7) ◽  
pp. 659-670 ◽  
Author(s):  
Jieyuan Yang ◽  
Jinping Li ◽  
Rong Feng
Keyword(s):  
Heat Loss ◽  
Heating System ◽  
Solar Heating ◽  
Loss Analysis

Electrical Energy Steam Boiler Heat Loss Analysis in Japfa Comfeed Indonesia Tbk, Unit of Sidoarjo

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Joseph Priyandana ◽  
Jamaaluddin Jamaaluddin
Keyword(s):  
Heat Loss ◽  
Animal Feed ◽  
Electrical Energy ◽  
Operating Costs ◽  
Steam Boiler ◽  
Android Application ◽  
Loss Analysis ◽  
Feed Industry ◽  
Calculation Process ◽  
Electricity Costs

In the animal feed industry, steam is used in pellet making machines. In this process, steam from the boiler is distributed to the pellet mill through the pipe. The purpose of this study is to observe the waste of electricity costs of operating a boiler by calculating heat loss in a distribution pipe. The method of assessing heat loss is done by calculating losses caused by heat loss in the boiler distribution. Then make a calculation application model based on the data obtained. From the data analyzed, the amount of heat lost in the non-insulating distribution pipe is 0.766 kJ/s with a loss of Rp 5.628,600 operating costs per month compared to heat loss in an isolated pipe condition of 0.047 kJ/s with losses which cost slightly more than Rp 368 190 / month. This heat loss calculation process is made on an android application by entering the calculation formula on the program and the data that has been obtained.

scholarly journals Yearly Heat Loss Analysis of a Heat Recovery Ventilator Unit for a Single-Family House in St. John’s, NL, Canada

2019 ◽  
Vol 3 (5) ◽  
Author(s):  
Rabbani Rasha ◽  
M. Tariq Iqbal
Keyword(s):  
Energy Consumption ◽  
Heat Loss ◽  
Heat Recovery ◽  
Ventilation System ◽  
Single Family ◽  
Loss Analysis ◽  
Increase Energy Efficiency ◽  
Electricity Cost ◽  
Air Infiltration ◽  
Detached House

This paper represents an energy consumption and heat loss analysis of a heat recovery ventilator unit in a single-family detached house in St. John’s, NL, Canada. An energy-efficient house is a growing attraction to control the air infiltration, provide a comfortable environment with reduced yearly electricity cost. A mechanical induced ventilation system is inevitable to increase energy efficiency and to reduce greenhouse gas emissions of the house in order to supply fresh air. A heat recovery ventilator (HRV) is an air to air heat exchangers that recovers heat from inside of the house and delivers this preheated and fresh air to the space for maintaining the occupant’s comfort. In this paper, yearly energy consumption with the heat loss of a typical heat recovery ventilator unit is presented. MATLAB, BE opt, and Microsoft Excel are used to do all necessary simulation with calculation using one-year logged data. Methodology, results with graphs and detailed analysis of this research are included in this paper. This research indicates that the cost of running a HRV for a year in a house in St. John’s could be as high as $484 per year with an unknown air quality improvement.

Heat Loss Analysis of Flamelets in Near-Limit Spread Over Solid Fuel Surfaces

2001 ◽  
Author(s):  
Robert Vance ◽  
Indrek S. Wichman
Keyword(s):  
Heat Loss ◽  
Solid Fuel ◽  
Flame Spread ◽  
Environmental Conditions ◽  
Flame Length ◽  
Heat Losses ◽  
Loss Analysis ◽  
Parabolic Shape ◽  
Flame Sheet ◽  
Surface Decomposition

Abstract The profile of a spreading flamelet is analyzed by examining the heat losses to surrounding surfaces. The study addresses the reasons why flamelets have shapes ranging from round hemispherical “caps” to flat “coin-like” discs. A parabolic shape profile is used for the thin flame sheet, which provides both flame length and flame curvature. A third parameter specifies the height of the flame from the surface beneath it. Radiation and conduction heat losses from the flame sheet are calculated for various flame shapes. Overall heat losses as well as heat losses to the surface beneath the flamelet are examined. Some of the heat “losses” are misnamed because they produce the necessary surface decomposition for subsequent gaseous flame fuel vapors. Strictly, then, “losses” do not contribute appreciably to the maintenance of the flame. Physical arguments are made to explain observed flame spread behavior and flame shapes in response to prevailing flow and environmental conditions.

Numerical study of radiation heat loss from solar cavity receiver of parabolic dish collector

2020 ◽  
Vol 77 (7) ◽  
pp. 743-759 ◽  
Author(s):  
Ramola Sinha ◽  
Nitin P. Gulhane
Keyword(s):  
Heat Loss ◽  
Numerical Study ◽  
Radiation Heat ◽  
Radiation Heat Loss ◽  
Parabolic Dish
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