Quick Answer: On What Factors Does The Collector Efficiency Of A Solar Flat Plate Collector Depends?

How does a flat plate collector work?

WORKING PRINCIPLE OF FLAT PLATE COLLECTORS In FLAT PLATE COLLECTORS Sunlight passes through the glazing and strikes the absorber plate, which heats up, changing solar energy into heat energy.

heat losses to the surroundings are then at a minimum..

Why is a transparent cover used in a flat plate collector?

Explanation: A transparent cover is used in a flat plate collector. This is because it maximizes the transmission of the incident sunlight into the box thereby collecting maximum sunlight for thermal energy.

What are the two types of solar collectors?

Two different types of installations are used: Individual systems for homes or small communities. Photovoltaic panels can power electrical devices, while solar thermal collectors can heat homes or hot water (See Close-Up: “Solar, a Boundless, Universally Accessible Energy Source”).

What is solar 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 are the main advantages of flat plate solar collector?

Some advantages of the flat-plate collectors are that they are:Easy to manufacture.Low cost.Collect both beam and diffuse radiation.Permanently fixed (no sophisticated positioning or tracking equipment is required)Little maintenance.

In which collector maximum efficiency is obtained?

Answer: The maximum collector efficiency without reflector is obtained around 51% and with reflector is around 61%. Thus, the presence of reflector increases the collector efficiency of around 10%. The solar collector efficiency of around 55% to 60%, was also obtained by Hematian et al….

How are solar collectors classified?

Solar collectors can be classified into two general categories: (i) non-concentrating and (ii) concentrating. In the non-concentrating type, the collector area (the area that intercepts the solar radiation) is the same as the absorber area (the area that absorbs the radiation) [3].

How do you build a flat plate solar collector?

Here are some easy steps you can follow in building a flat plate solar collector.Step 1 – Test Your Solar Cells. … Step 2 – Cut the Plywood for the Solar Cells. … Step 3 – Varnish the Plywood. … Step 4 – Put Flux on the Solar Cell’s Bus Strips. … Step 5 – Attach the Solar Panel to the Plywood Panel.More items…•

What is the efficiency of 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.

What are the main components of a flat plate solar collector?

The collector consists of three major components: an absorber plate, transparent covers, and an insulated box and frame assembly. The absorber plate, commonly a black metal surface, absorbs the incident solar radiation and converts this solar energy to heat.

What are the 2 main disadvantages of solar energy?

Disadvantages of Solar EnergyCost. The initial cost of purchasing a solar system is fairly high. … Weather-Dependent. Although solar energy can still be collected during cloudy and rainy days, the efficiency of the solar system drops. … Solar Energy Storage Is Expensive. … Uses a Lot of Space. … Associated with Pollution.

How many types are flat plate collectors divided depending on type of heat transfer fluid?

These solar collectors are divided into two main types based on the type of heat transfer fluid used. These are named as liquid collectors and air collectors and the basic difference between the two types is in the design of the passages for the heat transfer fluid.

What is collector efficiency factor?

The efficiency factor of the collector (F′) is a representation of how a segment of the solar thermal collector transfers absorbed energy S through the metal fin-riser collector and into the coupled heat exchange fluid locally.

Which solar collector is more efficient?

There are multiple types of solar thermal collectors: Evacuated tube collectors are the most efficient but most costly type of hot water solar collectors. These collectors have glass or metal tubes with a vacuum, allowing them to operate well in colder climates.

How do you calculate the efficiency of a flat plate solar collector?

One method is to compute the thermal efficiency of a collector, which is the ratio of the average heat output from the collector divided by the rate that solar radiation strikes the panel. I = solar radiation intensity striking the collector (Btu/hr/ft2).

Which parameters can effect on performance of flat plate collector?

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 concentrating collectors over flat plate collectors?

Reflecting surfaces require less material in concentrating collectors than in flat plate collectors. 2. Absorber area is smaller in concentrating collectors. So insulation intensity is greater in concentrating collectors than flat plate collectors.

How many types of flat plate collectors are there?

Flat-plate collectors are basically divided into two categories according to their use, (i) Water or liquid heaters and (ii) Air heaters and (ii) Air heaters. These collectors meant for these uses are sub-divided as follows: The schematic diagram of all these collectors, with single glazing are shown in Fig.

What is the function of metal flat plate in solar panel for heat supply?

Solar collector technology A coated metal plate absorbs the sun’s radiation and causes its temperature to rise above the ambient. The plate then releases energy through radiation and convection to its immediate surroundings. Heat is thus transferred to the heat-transfer fluid which in turn feeds the hot water system.