2095
In sectors like heating , ventilation , and air conditioning , automotive , aero and electro-cooling , heat exchangers play a vital role in the energy efficiency .
 manufacturing process: heating; application: automotive; process characterization: electro-cooling; machine or equipment: heat exchangers
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 manufacturing process: heating; application: automotive; process characterization: electro-cooling; machine or equipment: heat exchangers