Question

A recuperator is used mainly as a waste heat recovery system in a

Answer 1

Number from one to five in order of importance:
Qualities you would like to have in a friend:
1.________________________________
2.________________________________
3.________________________________
4.________________________________
5.________________________________
II. Activities I like to do with my friends:
1.________________________________
2.________________________________
3.________________________________
4.________________________________
5.________________________________
III. Match the idioms to their definitions.
1. cost an arm and a leg A. very rich
2. make ends meet B. to cost a lot of money
3. cheapskate C. used for saying that time should not be wasted because you
lose money as a result
4. time is money D. someone who does not like to spend money
5. money doesn’t grow on trees E. to make a lot of money very quickly
6. money talks F. used for saying that money gives you power
7. loaded G. to have just enough money to buy the things you need
8. make a killing H. used for telling someone that they should not waste money, as
it is not easy to get
IV. Fill in the gaps using the correct idiom from the list below.
1. Come on hurry up - ___________________________________________!
2. He can definitely afford it, he’s____________________________________ .
3. You’re such a____________________________ , surely you can afford to buy a new pair of shoes!
4. We’re not buying you another skateboard ______________________________________ !
5. Of course Donald Trump is powerful, after all ____________________________________
6. Her business is very successful, she’s________________________________________ .
7. If we book our holiday in the school holidays it will_______________________________ .
8. Life is very expensive in London but we’re ____________________________________.
A. cost an arm and a leg
B. making a killing
C. loaded
D. money doesn’t grow on trees .
E. time is money
F. money talks
G. cheapskate
H. making ends meet
V. Write a dialogue:
When I woke up I asked my wife what the weather was like. She looked out of the window and said it was raining hard. Then she asked me what I wanted for breakfast. I said I wanted a glass of milk and a roll with jam. She said we didn’t have any jam and asked if I wanted honey instead. I said that was all right. Then I asked if she wanted to go out to dinner. She said she had already prepared some food for dinner. She also thought her mother would come to have dinner with us. She asked if I minded. I said I hoped there was a football match on TV that afternoon.
He: __________________________________________
She: _________________________________________
He: __________________________________________
She: _________________________________________
He: __________________________________________
She: _________________________________________
He: __________________________________________

Answer 2

Heaters, ventilation and air conditioning systems called as HVAC are used as a recuperator in mainly as a waste heat recovery system.

Definition of recuperator:

Recuperator also known as surface heat exchanger. It has separate flow paths for fluids along with the passages of their own. through which the heat is transferred by separating walls.

Types of recuperators;

1. Plate recuperators- They are used in forms of plates vertical and horizontal in exchange of heat.
2. Rotary recuperators- The waste gases and the combustion of air travels in the opposite directions through cylindrical rotation.

Advantages of Recuperators;

• They are element of ventilation equipment. It provides the return of heat in the type of room.
• The polluted air is removed from the room, by the recuperator without mixing with the outside air.
• It also minimizes the energy consumption in winters.
• Whether these recuperators are fitted in air conditioners or heaters they are capable of their own usage.

Hence, the Recuperators are used a heat recovery System.  The HVAC are one of the examples where recuperators are used.

Recuperator is a type of heat exchanger has separate flow paths for each fluid along their own passages and heat is transferred through the separating walls. Recuperators (e.g. economisers) are often used in power engineering, to increase the overall efficiency of thermodynamic cycles. For example, in a gas turbine engine. The recuperator transfers some of the waste heat in the exhaust to the compressed air, thus preheating it before entering the combustion chamber. Many recuperators are designed as counter-flow heat exchangers.