Exam (elaborations)
Unit 81 Boiler and Related Equipment – Qs & As
- Course
- Institution
Unit 81 Boiler and Related Equipment – Qs & As
[Show more]
Seller
Follow
LeCrae
Reviews received
Content preview
Unit 81 Boiler and Related Equipment – Qs & AsWhat kind of boiler is used for residential installations? ✔️Ans - Hot-
water.
What is the difference between a steam boiler and a hot water boiler?
✔️Ans - A hot water boiler does not actually boil the water.
Why are steam boilers used in applications requiring a large heating capacity?
✔️Ans - Because it takes 10 times more heat to boil a pound of water than to
change its temperature 100°F.
Most hot water boilers heat the water up to temperatures? ✔️Ans - Of
180°F to 200°F.
Radiant floor heating systems typically operate at temperatures of? ✔️Ans -
85°F to 140°F.
What is the minimum desired return water temperature for a gas fired boiler?
✔️Ans - At least 140°F returning to the boiler.
Why is it desirable to have a minimum water temperature entering the boiler?
✔️Ans - To prevent condensation in the flue.
What is a pickling solution? ✔️Ans - A corrosion inhibitor used on steel
pipes.
What materials are boilers commonly made from? ✔️Ans - Most boilers
are either cast iron or steel.
What is the purpose of bypass piping on a hot water gas fired boiler? ✔️Ans
- Ensure that the return water temperature does not drop too low.
What is the difference between a fire tube and a water tube boiler? ✔️Ans -
Water is inside the tubes of a water tube boiler and outside the tubes of a fire
tube boiler.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now