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J&H McLaren was a British engineering company in Hunslet, Leeds, England, that manufactured traction engines, stationary engines and later, diesel engines. The company was founded in 1876 by John and Henry McLaren. They had both been apprenticed to Black, Hawthorn & Co of Gateshead
Maintenance of marine heat exchangers is important to ensure the small pathways in both types of coolers do not become fouled. Depending on the system different types fouling may occur. In oil based systems, an insufficient amount of cooling medium or inefficient flow of oil through the heater can cause the heater to become fouled.
The key distinguishing feature of a narrowboat is its width, which must be less than 7 feet (2.13 m) to navigate British narrow canals. Some old boats are very close to this limit (often built 7 feet 1 + 1 ⁄ 2 inches or 2.17 metres or slightly wider), and can have trouble using certain narrow locks whose width has been reduced over time because of subsidence.
The fluid characteristics of winter diesel are also extended allowing a diesel type of CFPP –15 °C to be operated safely in –24 °C weather conditions. [4] Note that a filter heater cannot melt wax particles in the feed system so that fuel supply can be problematic at cold start.
A catalytic heater is a flameless heater which relies on catalyzed chemical reactions to break down molecules and produce calefaction (heat). [1] When the catalyst, fuel (e.g., natural gas), and oxygen combine together, they react at a low enough temperature that a flame is not produced.
They are generally diesel engines with combustion chamber parts lined with ceramic thermal barrier coatings. [13] Some make use of titanium pistons and other titanium parts due to its low thermal conductivity [14] and mass. Some designs are able to eliminate the use of a cooling system and associated parasitic losses altogether. [15]