Table of Contents
- 1 What factors affect the performance of solar collectors?
- 2 What are the losses affecting the efficiency of flat plate collector?
- 3 Which is the limitation of flat plate collector?
- 4 What is flat plate collector?
- 5 How does the collection of solar energy is affected by tilting a flat plate collector with respect to ground?
- 6 How can the performance of solar collectors be improved?
- 7 What are the advantages and disadvantages of flat plate collector?
- 8 What are the three main factors that affect Earth’s solar budget?
- 9 Why nanofluids are used in flat plate solar collector?
- 10 What are the factors that affect the thermal efficiency of FPSC?
What factors affect the performance of solar collectors?
Major parameters that affect the performance of solar collector are absorptivity and emissivity of absorber, emissivity of glass cover, temperature of absorber plate, collector tilt angle and number of glass covers.
What are the losses affecting the efficiency of flat plate collector?
3.5. 11; in this system, the water temperature is increased by the flat plate solar collectors. To avoid water freezing in the winter season, antifreeze fluid is added and mixed with the water. The circulating pump will force the water to flow through the heat exchanger (HEX).
How can you increase the efficiency of a flat plate collector?
The collector efficiency is obtained here, without reflector as 51\%, and with reflector as 61\%. Thus, the overall efficiency of the flat plate solar collector is increased approximately 10\% by using the reflector with the collector.
Which is the limitation of flat plate collector?
The principal disadvantage of a flat plate collector is that because of the absence of optical concentration, the area from which heat is lost is large. Also due to the same reason high temperatures cannot be attained and as a result the collection efficiency is generally low.
What is flat plate collector?
A flat-plate collector (FPC) is a device to collect solar energy and transform it into thermal energy (low-grade energy) by using water as a working fluid. It is a heart of solar thermal devices that has many applications in a medium temperature range ≅100 °C from domestic to preheating to industrial sectors.
What is collector efficiency factor?
The collector efficiency factor F′ is defined as the ratio of the actual thermal collector power to the power of an ideal collector whose absorber temperature is equal to the fluid temperature (cf.
How does the collection of solar energy is affected by tilting a flat plate collector with respect to ground?
Both the orientation and tilt angle change the solar radiation reaching the surface of the collector. The loss in the amount of collected energy is around 1\% if the angle of tilt is adjusted seasonally instead of using βopt for each month of the year.
How can the performance of solar collectors be improved?
The performance of solar thermal collectors can be enhanced by the following ways: (a) increasing the solar selectivity of the absorber [67,71], (b) reducing the thermal losses from the collector [72–75], and (c) increasing the heat transfer coefficient between the absorber surface and the working fluid (water, oil.
Which parameters can affect on performance of flat plate collector Mcq?
Water is considered in the present study as the working fluid. Other factors affect the efficiency of the collector as the water rate of flow, selective coatings of the front surface of the absorber, heat losses by convection and radiation, the surface absorptivity of the surface.
What are the advantages and disadvantages of flat plate collector?
Pros
- Save money on your energy bill.
- Earn money through the Renewable Heat Incentive.
- Cut your carbon footprint.
- Get hot water throughout the year.
- You’ll probably need a backup heater.
- Solar hot water systems aren’t compatible with combi boilers.
- Flat plate collectors can be less efficient than other systems.
What are the three main factors that affect Earth’s solar budget?
Surface Energy Budget. To understand how the Earth’s climate system balances the energy budget, we have to consider processes occurring at the three levels: the surface of the Earth, where most solar heating takes place; the edge of Earth’s atmosphere, where sunlight enters the system; and the atmosphere in between.
What factors affect the efficiency of a flat plate collector?
Another factor affecting solar collector efficiency depends on whether the surface of the flat plate collector is glazed or unglazed. Glazing affects how easily the sun’s rays are transferred into the solar compartment.
Why nanofluids are used in flat plate solar collector?
Flat plate solar collector (FPSC) is one of the most important applications of solar energy in different domestic applications. The use of nanofluids in FPSCs, due to their superior thermo-physical properties, makes it an effective way to enhance the performance of FPSCs.
What are the factors that affect the thermal efficiency of FPSC?
More specifically, the effect of various parameters such as type of nanoparticle, nanoparticle concentration, nanoparticle size, and mass flow rate of the nanofluid on the thermal efficiency of the FPSC is extensively analyzed with detailed decisions.