Task 6) (LO: P 2.2) Following up from task 5 above, Describe the different proce

Question

Task 6) (LO: P 2.2)

Following up from task 5 above, Describe the different process control terms given below in a report, as it applies to an HVAC System used in the soft drink factory in the same scenario, in a manner that can be understood by someone without a technical background.

deviation

manipulated variable

direct acting

bumpless transfer   smoothly from manual to automatic u want HVAC system to be like this

Task 6) (LO: P 2.2)

Following up from task 5 above, Describe the different process control terms given below in a report, as it applies to an HVAC System used in the soft drink factory in the same scenario, in a manner that can be understood by someone without a technical background.

deviation

manipulated variable

direct acting

bumpless transfer   smoothly from manual to automatic u want HVAC system to be like this

Explanation / Answer

Deviation                                It refers to difference between the desired values and actual values. For example, the HVAC is set for temperature of 20o C and it only able to maintain 22, then there is a deviation of 2o C

Manipulated Variables         It refers to parameters that can be changed manually to maintain the temperature such as compressor speed or rotation of the fan.

Direct acting                          When the speed of compressor increases or the flow of refrigerant increases in HVAC, the cooling increases. This is known as an Increase/Increase (III) relationship, or a direct acting relationship element.

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