HVAC Engineer Interview 70 Question amp Answers

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Please Support My work • • Video • • Q.1) What is the Unit of Heat? • Q.2) What is TON 1 TON = ? • Q.3) Volume Of Air is measured in? • Q.4) What is ASHRAE? • Q.5) What is the Room Temperature that you maintain in any room? • Q.8) Heat Transfer Coefficient (U): • Q.9) What is CFM • Q.10) What is Aspect Ratio? • Q.11) What is Collar Length? • Q.12) What are the important things to be considered before selecting devices like AHUs and Chillers? • Q.13) What is Pumps supply fittings? • Q.14) What is Pumps return fittings? • Q.15) CFM distribution wrt the given floor plan? • Q.16) Calculating loads wrt any plan by using software. • Q.17) Type of Dampers? • Q.18) Types of motorized damper? • Q.19) Types of grills and diffusers? • Q.20) What is VFD? • Q.21) How do you control or balance the chilled water • Q.22) How do you control the noise or vibration in the duct? • Q.23) Temperature of water at outlet of chiller and inlet of AHU? • Q.24) What are primary pumps and secondary pumps • Q.25) AHU FCU Valve connection details? • Q.26) What is CFM value? • Q.27) What are the refrigerants used in split unit? • Q.28) What are duct heaters and why do we use them if we already have heating option in AHU? • Q.29) What is VAV and its working? • Q.30) What is 3 way valve and 2 way valve? Where we will use them and why? • Q.31) What is duct gauge normally we use in buildings for cooling and for exhaust ducts? • Q.32) Types of Duct joints? • Q.33) Standard books for HVAC? • Q.34) What is smoke and light test? • Q.35) What are the different method used for duct sizing? • Q.36) How do you measure control the noise level in A/C system? • Q.37) What are the recommended pressure drop in Chilled water pipes? • Q.38) What are different duct shapes normally used? • Q.39) Where do you use Fire Damper, Splitter Damper Non Return Damper? • Q.40) What are the different types of exhaust fans used to extract the air? • Q.41) How do you control vibration of AHU Chillers? • Q.42) What is the difference between VAV CAV? • Q.43) Mention typical valve arrangement for chiller connection? • Q.44) What do you consider while making plant room layout explain briefly? • Q.45) What are the different type of Louvers used? • Q.46) Classify the different types of chillers? • Q.47) What are the standard test pressure for chilled water piping for Industrial application? • Q.48) What are the Securities checking in chillers? • Q.49) What are the temperature RH required for human comfort? • Q.50) At what temperature degree Ferhenit degree Celsius are same? • Q.51) Which gas is used to purge the refrigerant line during the brazing? • Q.53) How much design velocity required in the main duct of an office building? • Q.54) How we install internal insulation in Ducts? • Q.55) Difference between nominal capacity and Actual capacity? • Q.56) Is this nominal capacity equal in every country? • Q.57) How to find Weight of Duct? • Q.58) What are the different materials used for underground chilled water supply? • Q.59) How to find velocity (FPM)? • Q.60) What Is The FCU? • Q.61) What Is The Function Of AHU? • Q.62) What Are The Types Of Air Conditioning Systems? • Q.63) What Does A Hvac Engineer Do? • Q.64) What Is The HVAC System? • Q.65) What Is The Meaning Of Btu In Air Conditioners? • Q.66) What Is Variable Air Volume System Dual Duct System? • Q.67) What Is Constant Volume System? • Q.68) What Is Centralized Air System? • Q.69) What Is The Meaning Of FAHU? • Q.70) What Is Cfm Infiltration? • • by kreativehelp

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