10314 Footprint

Three technologies in particular offer compact packaging and have an appeal to end users seeking an unobtrusive CHP system. Stirling engines are the smallest, followed by fuel cells and microturbines. Larger steam turbines, gas turbines, and reciprocating engines are generally isolated in either a factory enclosure or a separate building along with ancillary equipment. Table 10.2 shows equivalent footprint size for several different CHP types.

TABLE 10.2

Equivalent Footprint Size for Different CHP Types

Equivalent CHP Dimensions Technology (for indicated KWe)

Steam turbine Refrigerator (100)/Garage (100,000)

Gas turbine Ryder Truck (3000)

Reciprocating engines 2 Refrigerators (30)

Micro turbine Refrigerator (30)

Fuel cella Ryder Truck (200)

Stirling engine Oven (3)

a Includes the fuel cell stack and the balance-of-plant (BOP).

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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