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 ...
Training Module on Steam Turbine
Steam Turbine
A Steam Turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into rotary motion. Its modern manifestation was invented by Sir Charles Parsons in 1884.
Steam Turbine Topics:
- Functioning of steam turbines and their constructional features
- Governing and control, HP-LP bypass valve
- Gland sealing, control oil, seal oil, lubricating oil systems
Table of Contents
- Principle of Operation of Steam Turbines
- Extractions of Steam Turbine
- Constructional Features of Steam Turbine
- Thrust Balancing System of a Steam Turbine
- Support, Anchor, Expansion Provision of a Turbine
- Turbine Barring Arrangement
- Turbine Steam Admission Valves
- Turbine Governing System
- Turbine Lub Oil System
- Turbine Gland Sealing System
- Concept of HP/LP Bypass System
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