Ventilation Rates in Feedlots

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Questions and Answers

What is the trend of the ventilation rates from 12:00 PM to 1:00 PM?

It remains constant
It rises
It drops significantly (correct)
It fluctuates

What is the ventilation rate for the outside environment at 2:00 PM?

-5.23 m3/s
-1.79 m3/s
-1.85 m3/s (correct)
-1.27 m3/s

What is the highest calculated ventilation rate for the inside environment?

-1.27 m3/s (correct)
-1.85 m3/s
-1.79 m3/s
-5.21 m3/s

What happens to the ventilation rates at 2:00 PM?

It rises (C) Signup and view all the answers

What is the ventilation rate for the inside environment at 1:00 PM?

-5.21 m3/s (A) Signup and view all the answers

In a livestock housing, what is essential to understand in order to maximize production and welfare?

The factors affecting thermal changes (C) Signup and view all the answers

What is sensible heat related to in a livestock housing?

Animal activity and body mass (D) Signup and view all the answers

Why is a negative ventilation rate intentional in a livestock housing?

To remove stale air, moisture, and pollutants (C) Signup and view all the answers

What is the purpose of understanding sensible and latent heat from animals?

To calculate the energy and mass balance of a livestock housing (A) Signup and view all the answers

What is the significance of animal weight in calculating the energy and mass balance?

It affects the sensible heat from animals (A) Signup and view all the answers

What is the purpose of ventilation in a livestock housing?

To prevent the buildup of pollutants (B) Signup and view all the answers

What can be inferred from the negative supplementary sensible heat?

The cattle house may need active cooling measures to maintain desired temperature levels. (A) Signup and view all the answers

What is the primary role of the ventilation system in the cattle house?

To eliminate surplus heat and moisture (B) Signup and view all the answers

What is the consequence of inefficient ventilation system design and operation?

Accumulation of detrimental gases and pathogens (A) Signup and view all the answers

What is the significance of understanding the sensible heat balance and ventilation dynamics?

To create a healthy, comfortable, and productive environment for the livestock (B) Signup and view all the answers

What is the sensible heat production rate of livestock?

3105 W (D) Signup and view all the answers

What is the purpose of efficient energy management strategies in the cattle house?

To balance heat production, heat removal, and heat loss to optimize energy usage and maintain cost-effective operations (D) Signup and view all the answers

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Study Notes

Ventilation Rates in Feedlot

Graphical representation of calculated ventilation rates for inside and outside environments of the feedlot is presented.
Calculated values of ventilation rates are negative for both inside and outside environments.
Highest ventilation rates are at 12:00 PM, with -1.27 m3/s for inside and -1.29 m3/s for outside environments.

Ventilation Rate Variation

Significant drop in ventilation rates occurs at 1:00 PM, with -5.21 m3/s for inside and -5.23 m3/s for outside environments.
Ventilation rates rise at 2:00 PM, with -1.79 m3/s for inside and -1.85 m3/s for outside environments.