wˌaɪl æt kˈɔːnpoːɹ hiː ɪnvˈɛntᵻd sˈɛvɹəl ˈɛɹkəndˈɪʃənɪŋ sˈɪstəmz, ɪŋklˈuːdɪŋ ɐn ɪvˌæpɚɹˈeɪʃən kˈuːlɪŋ sˈɪstəm wˌɪtʃ hiː tˈɜːmd ðə ɹᵻfɹˈɪdʒɚɹˌeɪɾɚ.
While at Cawnpore he invented several air-conditioning systems, including an evaporation cooling system which he termed the refrigerator.