This part of IEC 62282 covers operational and environmental aspects of the stationary fuel cell power systems performance. The test methods apply as follows:
- power output under specified operating and transient conditions;
- electrical and thermal efficiency under specified operating conditions;
- environmental characteristics; for example, gas emissions, noise, etc. under specified operating and transient conditions.
Coverage for Electromagnetic Compatibility (EMC) is not provided in this part of IEC 62282.
Fuel cell power systems may have different subsystems depending upon types of fuel cell and applications, and they have different streams of material and energy into and out of them. However, a common system diagram and boundary has been defined for evaluation of the fuel cell power system (See Figure 1). The following conditions are considered in order to determine the test boundary of the fuel cell power system.
- All energy recovery systems are included within the test boundary.
- Calculation of the heating value of the input fuel (such as natural gas, propane gas, and pure hydrogen gas, etc.) is based on the conditions of the fuel at the boundary of the fuel cell power system.
This standard does not take into account mechanical (shaft) power or mechanical energy inputs or outputs. Mechanical systems required for fuel cell operation (i.e. ventilation or micro-turbines or compressors) will be included inside the test boundary. The direct measurement of these mechanical systems inside the test boundary is not required; however, their effects will be included in the fuel cell power system operation. If mechanical (shaft) power and energy cross the test boundary, additional measurements and calculations are necessary.