Type III — Low-PressureCâu 167 / 240
Water entering the refrigerant side of a low-pressure chiller through a leaking tube is dangerous mainly because it can:
a.Increase cooling capacity
b.Improve oil return
c.Cause acid formation and corrosion
d.Lower the refrigerant's boiling point
Giải thích
Water that leaks into the refrigerant side reacts to form acids, corrodes metal parts, can freeze and damage tubes, and contaminates the refrigerant. Because the chiller runs under vacuum, a tube leak lets cooling water be pulled inward. Any sign of water intrusion calls for investigation, not just resetting controls.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- What is the primary purpose of a purge unit on a low-pressure centrifugal chiller?
- Which of the following is a low-pressure refrigerant used in centrifugal chillers?
- Because a low-pressure chiller operates in a vacuum on the low side, what happens when it develops a leak?
- To speed up refrigerant recovery from a low-pressure chiller, a technician should:
- Frequent operation of the purge unit on a low-pressure chiller is usually a sign that:
- A low-pressure refrigerant is defined as one with a boiling point at atmospheric pressure that is:
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với EPA Section 608 Technician Certification Exam · Quy trình kiểm tra