Question

Fill in the given blanks with an appropriate word(s).
1.As a general rule of thumb, a location is considered good for construction of wind turbines if the average wind power density is about - - - - - -
2.The temperature of geothermal water should be - - - - - - for cooling applications for reasonable values of performance factor.

2.In a Lancashire steam boiler, there is a - - - - - - at the end of the fire grate which is utilized in deflecting the flue gases upwards.
4.There are geothermal resources named - - - - - -contain hot liquid water at temperatures up to 450 K and pressures up to 60 MPa.
5.There are fine flat plates in the combustion chamber of a single-ended scotch marine boiler. These plates require - - - - - -
6.The main objective of the - - - - - - is to protect the turbines against the water hammer effect at the time of starting or shutting off the hydroelectric power plant.
7.Based on the furnace position, Cornish boiler is classified as - - - - - -

Answer 1

Answer:

1.As a general rule of thumb, a location is considered good for construction of wind turbines if the average wind power density is about 50 W/M^2 and with the tower height of 300 ft and rotar blades as 30 ft.

2.The temperature of geothermal water should be 200 to 240 degree centigrade for cooling applications for reasonable values of performance factor.

Explanation:

Cooling application effectiveness is bases on the geothermal water temperature as the geothermal water temperature directly affects the output of any turbine used in the application. It affects the total turbine work and absorbtion coolong system performance. Best cooling is obtained at the temperature range of 200 to 240 degree of geothermal water

3. In a Lancashire steam boiler, there is a Fire bridge at the end of the fire grate which is utilized in deflecting the flue gases upwards

Explanation:

Fire bridge with the brickwork is provided generally at the end of the grate and it is gneerally used to prevent the flow of hot and flue gases inside the furnace so it generally deflects the flue gases upwards. If flue gases go inside the furnace, these provides resistance to heat flow which is not desired

4. There are geothermal resources named hot rocks and molten rocks called as Magna contain hot liquid water at temperatures up to 450 K and pressures up to 60 MPa.

Explaination:

Geothermal energy is the form of the heat which is obtained from the earth and there is various states which keeps the temperature and pressure to the required value.

5.There are fine flat plates in the combustion chamber of a single-ended scotch marine boiler. These plates require STAYING (Top plate, backplate, two side plates and the tube plate)

Explaination:

In a single ended scotch marine boiler, boiler is fired by four furnaces. The furnaces are corrugated which is done for increasing the strength. Each furnace presents have the seperate champer and champer is having fine plate which requires staying

6. The main objective of the surge tank and valve is to protect the turbines against the water hammer effect at the time of starting or shutting off the hydroelectric power plant.

Explaination:

The sudden rise in the pressure in the area of penstock is called water hammer. For reduction the risk of the water hammer the surge tank is place near the penstock. The arrest of water is gnerally carried with the help of surge shaft which is open in the top and water flows from it so when the water level increases, the kinetic energy of water changes to ptential enrgy and it leads to deceleration of the water resulting in reduction the affect of water hammer.

7.Based on the furnace position, Cornish boiler is classified as fire tube and water tube boiler

Explaination:

Both water and fire tube boiler are the cornish type of boiler and in both type of boilers, furnace is used . In water type boiler water flows inside the tube and hot gases are surronding the tube and in case of fire tube boiler the flew gases are inside the tube while the water surrounds them.