Delta T (ΔT) in HVAC Systems – Complete Explanation In HVAC, Delta T (ΔT) means: Difference between two temperatures Formula: ΔT=T1−T2 Where: ΔT = Temperature difference T₁ = First temperature T₂ = Second temperature Why Delta T is Important in HVAC Delta T tells us: • How much cooling or heating is happening • Whether equipment is working properly • Energy efficiency of system • Water flow and air flow condition • Coil performance • Chiller efficiency In HVAC mainly two Delta T are used: • Water Side Delta T • Air Side Delta T 1. Water Side Delta T (Chilled Water / Hot Water) This is the temperature difference between: • Supply water temperature • Return water temperature Usually used in: • Chillers • FCU • AHU • Heat exchangers Chilled Water Delta T In cooling system: • Chiller sends cold water → called CHWS (Chilled Water Supply) • Water absorbs room heat • Warm water returns → called CHWR (Chilled Water Return) Formula: ΔTwater = Treturn−Tsupply Example 1 – Normal ...
Maintenance Policies – Preventive Maintenance Unit-II
Introduction to Preventive Maintenance
This unit covers the fundamental principles of preventive maintenance, highlighting the importance of regular inspections, timely repairs, and consistent monitoring to avoid unexpected equipment failures. Implementing effective maintenance policies ensures that assets operate efficiently, reducing downtime and extending their lifespan.
Key Components of Preventive Maintenance
- Scheduled Inspections
- Regular Cleaning and Lubrication
- Timely Parts Replacement
- Performance Monitoring
Benefits of Preventive Maintenance
Preventive maintenance reduces the risk of equipment breakdown, lowers repair costs, and increases operational efficiency. By adhering to a structured maintenance schedule, organizations can ensure the long-term reliability of their assets.
Comments
Post a Comment