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Siemens SD-160 – Edmonton Transit System and Calgary Transit – Alberta, Canada; LHB/Siemens M1/M2/M3 Metro (Pair) – Prague Metro Czech Republic; Siemens-Adtranz LRV; MX3000 Metro car for Oslo (SGP Wien works) – Oslo T-bane, Norway; CAF S4000 Metro – Barcelona Metro; Schindler/Fiat-SIG/Adtranz Cobra Be 4/6 Low Floor LRV – Zurich VBZ
AC contactor for pump application. A contactor is an electrically controlled switch used for switching an electrical power circuit. [1] A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch.
A packaged terminal air conditioner (PTAC) is a type of self-contained heating and air conditioning system intended to be mounted through a wall. [1] The first practical semi-portable air conditioning unit invented by engineers at Chrysler Motors. It entered the market in 1935, and was designed to fit under a window like many modern PTACs. [2]
Clean air delivery rate (CADR) is the amount of clean air an air cleaner provides to a room or space. When determining CADR, the amount of airflow in a space is taken into account. For example, an air cleaner with a flow rate of 30 cubic metres (1,000 cu ft) per minute and an efficiency of 50% has a CADR of 15 cubic metres (500 cu ft) per minute.
Liebert developed the first prototype precision air conditioner in his garage. ... Vertiv's share price increased 252%, ... 2022 [68] 5,692 13.89% 77 7,096 13.38 27,000
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In 2023, Siemens invested a total of €6.1 billion in research and development. [2] As of 30 September 2022, Siemens had approximately 46,900 employees engaged in research and development and held approximately 43,600 patents worldwide. [6]
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