Thermal Storage Test Report: TSU Bed Conditioning (1040A), Thermal Storage System Controls Test (1040B)

摘要

The objective of the thermal storage unit (TSU) bed conditioning test program was to heat the thermal storage media (rock, sand, and oil) in the TSU to 250 deg F to 300 exp 0 F removing all water in the bed and enabling oil circulation at higher flows and temperatures for removal of contamination and sediment from the oil. The acceptance criteria were considered satisfied when the bed was heated to a minimum of 250 deg F, and the filters in the oil charging loops had a pressure drop of less than 2 psid during two hours of oil flow at an oil flow rate of 500,000 lb/hr in each train at an oil temperature of 250 deg F. The general objectives of the thermal storage system controls test were to: verify the process operation of solar specific portions of the plant, develop the control functions and/or field tune the individual plant controllers, and verify selected portions of the Plant Operating Procedures. The first portion involved bringing the flash tank loops into service as well as the main inlet steam and desuperheater loops. The second part involved charging loop subsystem. The third portion involved the extraction loop subsystem. The activities of this test deal with functional tests of control loops and limited control loop tuning and with tuning of control loops and performing closed loop testing over full operating ranges of temperature, pressure, and flow. (ERA citation 10:023649)