Energy Conservation Fundamentals Introduction – Energy and material balance around each energy consuming node should be carried out to establish all energy losses, including those occurring in transit as well as those resulting from the application itself. Transit energy losses refer to fugitive emissions or pipe leakages of steam, hot and cold water, liquid and gaseous fuel during transmission from one area to another. Energy loss calculations are relatively simple and can be done by the senior plant operator on a daily basis.
Energy Conservation Fundamentals Introduction
A prerequisite of reliable energy and material balance practice is the proper recording of all energy related parameters, including temperature, flow, specific gravity, and heating values.
To identify the subject of energy balance: for reasons of simplicity, assume that energy balances must be established for each major energy-using piece of equipment identified during a preliminary energy survey.
The first step is to define what is needed to build the required energy balance:
– Identify all operations in which energy (heat or work) is either introduced or removed from the balance object
– Identify each input and output energy stream.
The second step is to ensure that the balanced system has reached steady state normal operation condition.
The third step is to gather the data necessary to build the balance. Some data may already be available; some may never have been gathered.
Measurements necessary for energy balance for a furnace:
Product flow and temperature.
Flue gas composition and temperature.
Fuel flow rate and heating value.
Combustion air temperature and flow.
Furnace surface temperature.
Mechanical equipment electric consumption.