The ideal boiler includes
1. Simplicity in construction, excellent workmanship, materials conducive to low maintenance cost, high efficiency, and high availability.
2. Design and construction to accommodate expansion and contraction properties of materials.
3. Adequate steam and water space, delivery of clean steam, and good water circulation.
4. A furnace setting conducive to efficient combustion and maximum rate of heat transfer.
5. Responsiveness to sudden demands and upset conditions.
6. Accessibility for cleaning and repair.
7. A factor of safety that meets code requirement.
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