There are many heat sources located outside of an engine. One of these sources is the sun in the sky.
False
The energy source in a steam engine is the heat source that converts water into steam thus creating pressure. The heat source itself can be a coal, wood, gas or petroleum burner but can also be something different like a solar panel or a nuclear reactor (most nuclear reactors are themselves steam engines-generators).
A heater can be either an internal combustion engine or an external combustion engine, depending on its design and operation. Internal combustion engines generate heat through the combustion of fuel within the engine itself, while external combustion engines produce heat by burning fuel outside the engine to heat a working fluid. Common examples of heaters include furnaces (external combustion) and car engines (internal combustion). The specific classification depends on how and where the combustion occurs in relation to the heat-producing mechanism.
The condenser can be either outside or inside, depending on the type of system. In air conditioning systems, the condenser is typically located outside the building to dissipate heat. In some refrigeration systems, however, the condenser may be located inside. The placement of the condenser is crucial for the efficiency and effectiveness of the cooling system.
is it possible to construt a heat engine that will not expel heat into the atmosphere
External combustion engine is the answer you're looking for.
Friction
A car engine is a heat engine, but there are various types of heat engines outside the realm of car and truck engines.
False
A heat engine can never be 100% efficient due to the second law of thermodynamics, which states that some heat energy will always be lost to the surroundings. The temperature required for maximum efficiency is the temperature of the heat source for the engine. The efficiency of a heat engine is determined by the temperature difference between the heat source and the environment.
on the top
False (APEX)
Increasing the temperature of the heat source is the most effective way to improve the efficiency of a heat engine.
On a Hyundai Santa Fe, the starter is located on the top of the engine. The engine is located next to the heat pump.
As a "heat engine", a car engine must rid itself of heat to continue. Efficiency of the heat engine depends on the difference in temperature; therefore, as the temperature outside reaches the temperature inside, the engine stops.
By using a heat source to boil water.
A combustion engine powered by fossil fuels is a common source of heat and power. It generates energy by burning fuel to produce heat, which is then converted into mechanical power.