ASME PTC 4.3 PDF

Description

This Code provides procedures for conducting performance tests of air heaters to determine exit gas temperature, air to gas leakage, fluid pressure losses and other fluid temperatures.
Code provides procedures conducting performance tests air heaters determine: exit gas temperature; leakage; fluid pressure losses; temperatures. also determine heat capacity ratio (x-ratio) performances results specified may necessary for: checking actual standard design performance; comparing changes time various operating conditions; determining effect equipment. applies used industrial application, e.g., servicing steam generators furnaces. specifically includes: combustion gas-to-air exchanger including multi-section streams; preheater coils utilizing noncondensing (single phase) steam, water hot fluids. not cover direct-fired gas-to-gas exchangers. latter thermal drop performance, alternate methods leakage measurement agreed upon parties. exchangers heating condensed passing heater. parallel shall tested individually (wherever possible) purposes performance. requires pretest post-test uncertainty analysis. analysis required order effectively plan test. allows corrective action taken prior test, either decrease level consistent agreed-upon uncertainty, reduce cost test still attaining objective.