Abstract
In this work, we describe the design and test of a new piece of equipment, developed in order to enhance speed, gas consumption and safety during the manual asphalt roofing process. The novelty of the equipment is based on the use of a set of five parallel gas burners located in front of the roll to maximize heat transfer. The equipment is light and can be used by any worker on any type of roof. It also includes a thermal insulation cover to significantly reduce gas consumption and, thus, to reduce CO2, SO2, and other non-eco-friendly emissions. In this paper, we present the mechanical and thermal design and analysis of the equipment, Computer Fluid Dynamics (CFD) simulations for heat transfer calculation, a description of the manufacturing and assembly, a preliminary thermal test, and an operational test. The results demonstrate an installation speed of 1.75 m2/min, for 3 kg/m2 rolls, which translates to around 700–735 m2 per person per day, more than twice the usual manual roofing rate. Nevertheless, some issues need to be resolved, such as the nonuniform heat distribution and the low heat transfer at the end of the roll installation.
Highlights
Nowadays, roofing methods play an essential role in the energy efficiency and weather resistance of buildings and houses [1]
We present the mechanical and thermal design and an analysis of the equipment, Computer Fluid Dynamics (CFD) simulations for the calculation of heat transfer, a description of the manufacturing and assembly, a preliminary thermal test, and an operational test of this new equipment, demonstrating the claimed advantages
We have described the design and testing of a new piece of equipment, which was developed to enhance speed, gas consumption and safety during the manual asphalt roofing process
Summary
Nowadays, roofing methods play an essential role in the energy efficiency and weather resistance of buildings and houses [1]. One common roof protection method is to install asphalt coatings. Specialized workers generally do asphalt roofing manually. Petroleum Gas (LPG) burner to apply the heat to the rolls. Workers perform several steps when roofing: locating the rolls, aligning them with respect to the previous rolls, unrolling them, applying heat, and finishing them off. A worker can install around 20–25 rolls per day (200–250 m2 ) using this manual procedure. Such a reduced capacity for manual installation has motivated patents and developments of new systems and equipment to facilitate and enhance roll installation speed
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