This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What would the mixed air temperature be for a system with 20 outdoor air if the outdoor temperature ... (Read 37 times)

Shelles

  • Hero Member
  • *****
  • Posts: 582
on: Jul 24, 2018
What would the mixed air temperature be for a system with 20 outdoor air if the outdoor temperature is 90F and the return air temperature is 80F?
 
  A) 0.8  90F =18F; 18F + 80F = 98F mixed air temperature
  B) (90F + 80F)  0.4 = 68F
  C) 0.2  90F =18F; 0.8  80F = 64F; 18F + 64F = 82F mixed air temperature
  D) (90F + 80F)/2 = 85F mixed air temperature

Question 2

Hot Surface Ignition System (HSI) controls lockout after how many unsuccessful attempts?
 
  A) Two attempts B) The controls do not lock out.
  C) Three or more attempts D) One attempt


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ririgirl15

  • Sr. Member
  • ****
  • Posts: 385
Reply #1 on: Jul 24, 2018
Answer to Question 1

C

Answer to Question 2

C


Shelles

  • Member
  • Posts: 582
Reply 2 on: Jul 24, 2018
Gracias!

daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Your heart beats over 36 million times a year.

The conduction system of the heart. The conduction system of the heart.
Temperature Sensations for Thermo-, Neutro-, and Cryo-Hydrotherapy Temperature Sensations for Thermo-, Neutro-, and Cryo-Hydrotherapy
An HACCP System Flowchart An HACCP System Flowchart
The Digestive System in Homeostasis The Digestive System in Homeostasis
In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ... In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ...
Cardiac conduction system Cardiac conduction system
Video: First Stage of Labor and Delivery Video

For a complete list of videos, visit our video library