Heat Capacity and Specific Heat in HVAC Applications

The video explains heat capacity and specific heat capacity, using water tanks and materials like Lead and Aluminum as analogies. It covers the calculation of specific heat capacity and its application in HVAC systems, emphasizing the importance of high heat capacity in cooling processes. The video concludes with a call to action for viewer engagement.

What is the primary focus of this video tutorial?

• The design of water tanks

• The concept of heat capacity and specific heat capacity

• The properties of metals

• The history of HVAC systems

Why does Tank A take longer for the water level to rise by 1 cm compared to Tank B?

• Tank B is filled faster

• Tank B is made of a different material

• Tank A has a larger capacity

• Tank A has a smaller capacity

Which material has a higher heat capacity, Aluminum or Lead?

• It depends on the temperature

• Lead

• Aluminum

• Both have the same heat capacity

How much heat is required to raise the temperature of 1 kg of Aluminum by 1 °C?

• 128 Joule per kg °C

• 6279 Joule per °C

• 1000 Joule per kg °C

• 897 Joule per kg °C

What is the difference between specific heat capacity and heat capacity?

• Specific heat capacity is variable, heat capacity is constant

• Specific heat capacity is constant for a material, heat capacity depends on mass

• Heat capacity is always higher than specific heat capacity

• Both are the same

In an HVAC system, why is water preferred as a cooling medium?

• Water has a low heat capacity

• Water is cheaper than other liquids

• Water has a high heat capacity

• Water evaporates quickly

What happens to water as it travels through the coils in an AHU?

• It loses heat to the air

• It evaporates

• It remains at the same temperature

• It absorbs heat from the return air

What would be the effect of using a liquid with low heat capacity in a chiller plant?

• The liquid would cool the air more effectively

• The liquid would not absorb any heat

• The liquid's temperature would increase rapidly, making cooling difficult

• The liquid would freeze

How does the heat capacity of water affect its temperature change in a chiller plant?

• It causes the temperature to fluctuate

• It keeps the temperature constant

• It allows the temperature to increase slowly

• It causes the temperature to decrease rapidly

What is the final temperature of water after it exits the cooling coil in an AHU?

• 6 °C

• 7 °C

• 10 °C

• 25 °C