Quote from: Nicolas PILLET on 06/17/2010 04:57 pmQuote from: Space Pete on 06/15/2010 06:04 pmFrom ISS On-Orbit Status Report for 15/06/2010:Elektron Shutdown Update:The automatic shutdown of the Russian Elektron O2 generator on 11/06 evening was commanded by the controlling software due to a high temperature reading from the KOB-1 internal thermal control loop.I don't understand what is written here. KOBs loops are part of STR (thermal regulation), what is the link with Elektron ?I think Elektron was shut down either because it got too hot, or because it was introducing too much heat into the overloaded KOB-1 loop.
Quote from: Space Pete on 06/15/2010 06:04 pmFrom ISS On-Orbit Status Report for 15/06/2010:Elektron Shutdown Update:The automatic shutdown of the Russian Elektron O2 generator on 11/06 evening was commanded by the controlling software due to a high temperature reading from the KOB-1 internal thermal control loop.I don't understand what is written here. KOBs loops are part of STR (thermal regulation), what is the link with Elektron ?
From ISS On-Orbit Status Report for 15/06/2010:Elektron Shutdown Update:The automatic shutdown of the Russian Elektron O2 generator on 11/06 evening was commanded by the controlling software due to a high temperature reading from the KOB-1 internal thermal control loop.
Working in the SM (Service Module) on the SOTR Thermal Control System’s KOB1 loop, Skvortsov replaced the N2 micropump on the 3SPN1 pump panel and its K-90 switching unit with new spares, supported by ground specialist tagup (S-band), then tested the system with the N2 power feed. [KOB1 had caused the shutdown of the Elektron on 6/11. The two SOTR KOB thermal loops control the removal of metabolic heat and heat emitted by working equipment; they also establish specific temperature conditions for the cabin atmosphere. The excess heat is passed from the coolant through liquid-liquid heat exchangers (ZhZhT) into the active external thermal control system (KOKh) for subsequent radiation into open space. Each loop contains 118 liters of "Triol" coolant fluid, i.e., water with a 30 percent solution of glycerin (to lower the freezing point to 7 degC) plus biocide and UV-light-sensitive additives to aid in leak detection. One liter of Triol, which is nontoxic and poses no hazard to the crew, can absorb about 14 cubic cm of air. Each of the two KOB loops is served by two nominally redundant pump panels (SPN), each equipped with two redundant replaceable electric pumps (ENA). While in the early years of Mir and ISS the pumps were integral to the SPN panels, the more advanced current design allows them to be replaced without requiring a swap-out of an entire SPN block.]
Quote from: Space Pete on 06/17/2010 05:24 pmQuote from: Nicolas PILLET on 06/17/2010 04:57 pmQuote from: Space Pete on 06/15/2010 06:04 pmFrom ISS On-Orbit Status Report for 15/06/2010:Elektron Shutdown Update:The automatic shutdown of the Russian Elektron O2 generator on 11/06 evening was commanded by the controlling software due to a high temperature reading from the KOB-1 internal thermal control loop.I don't understand what is written here. KOBs loops are part of STR (thermal regulation), what is the link with Elektron ?I think Elektron was shut down either because it got too hot, or because it was introducing too much heat into the overloaded KOB-1 loop.That was what I thought first, but I've been surprised by the word internal ("KOB-1 internal thermal control loop")...
About when will the crew move the crew quarter in kibo toits place in nobe 2 harmony?
We might need to closely monitor Monday's 11 AM EDT ISS update on NASA TV for news of what happened. Nothing was mentioned in the Russian press over the weekend, that I could see.
Quote from: JimO on 06/21/2010 12:41 pmWe might need to closely monitor Monday's 11 AM EDT ISS update on NASA TV for news of what happened. Nothing was mentioned in the Russian press over the weekend, that I could see.According to the NASA-TV schedule there is no ISS update today.