The design of capacity and operation of CHCP (combined heat, cooling and power) plants applied to HVAC (heating, ventilation and air conditioning) in buildings entails a considerable difficulty, because efficiency and economic aspects frequently interact in a complex way.
Though John reaches peaks of lyricism, he also presents the reader with considerable difficulties because his approach is rigorously intellectual.
Accurate simulation of these interfaces presents a problem of considerable difficulty on several levels.
Even if the person who fell was not alone when the fall happened, those who could not get up unaided could be on the floor for a considerable time because of the difficulty those present had in helping them up: in 10 such cases this took between five minutes and an hour.
This project may take a considerable time because of the difficulties involved in sequencing the large (40 times larger than rice), highly repetitive, hexaploid genome of wheat.
Councillor Myfanwy Alexander, cabinet member for education, said: "We see a considerable number of schools facing considerable difficulty and as an authority we must provide a challenge to them but also provide them with support.
Now as it struggles for relevance it faces a considerable handicap because of its democratic structure.
As December began, the Japanese experienced considerable difficulty in keeping their troops on Guadalcanal resupplied because of Allied air and naval attacks on the Japanese supply chain of ships and bases.
Because Western law gives great emphasis to the concept of possession, it has had considerable difficulty in making intangible things the object of property.
However, what the collapse of Kids Company illustrates is not only that lay part-time trustees have considerable difficulty in holding a powerful and high-profile chief executive accountable but also that there is a culture amongst many charities that believe that because what they do is so worthwhile they thereby have a divine right to funding.
Square Enix has overreacted to criticism of the previous game's considerable difficulty by making its latest effort a cakewalk.
