Your brewery requires access to 1500 l per hour of water at 85 oc hot water as part of the process. This hot water is generated by heating water from the mains supply using steam passed through a heat exchanger.
(a)Your task is to design a plate heat exchanger that can handle this duty. You will need to make some assumptions and to consider:
The type of heat exchanger you would choose, and a justification for this
The steam conditions and steam requirement (mass flow rate).
The flow direction of the heat exchanger (co- or counter-current flow) and a justification for this
Calculate or estimate the overall heat transfer coefficient for heat transfer across the exchanger wall. If you estimate the value of u, you need to give a justification for the values you choose (e.g. A reference to a suitable u value).
The surface area of the heat exchanger required for the duty

(b)The hot water in the storage tank is held in the tank until required in the process. If left uninsulated the water will lose heat through the surface of the tank. You are asked to make suggestions as to how the heat loss from the tank can be minimised and to estimate the thickness of insulation material required to keep the heat loss to an acceptable level. You will need to consider:
The dimensions of the tank that can hold 1500l.
What is an acceptable rate of heat loss from the tank.
The type of insulation that should be used.
An indicative calculation to estimate the thickness of the insulation material.