Vehicle (10)s, environmental control systems, and methods for operating an environmental control system are provided. In one example, the environmental control system (ECS) includes an ECS refrigeration unit (14) that is configured to receive ambient air (26, 28) and a first portion (110) and a second portion (112) of hot bleed air (24). The ECS refrigeration unit (14) is operable to indirectly exchange heat between the first portion (110) of the hot bleed air (24) and the ambient air (26, 28) to form a partially cooled, hot air stream, and to compress, further indirect heat exchange, and expand the partially cooled, hot air stream to form a cooled and expanded air stream (132). A low limit valve control (142) regulates a low limit valve (128) to control a rate of introduction of the second portion (112) of the hot bleed air (24) to the cooled and expanded air stream (132) to form a combined air stream (144) that when exiting the ECS refrigeration unit (14) is a sub-freezing air stream.
VEHICLE, ENVIRONMENTAL CONTROL SYSTEM, AND METHOD FOR OPERATING AN ENVIRONMENTAL CONTROL SYSTEM
FAHRZEUG, KLIMAREGELUNGSSYSTEM UND VERFAHREN ZUM BETREIBEN EINES KLIMAREGELUNGSSYSTEMS
HICULE, SYSTÈ
2023-03-22
Patent
Electronic Resource
English
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
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