Alva Patio Heater

patio heater
A patio heater (also called a mushroom or umbrella heater) is an appliance for generating radiant heat for outdoor use.

alva
Alva was a range of cars made by Automobiles Alva, Courbevoie, Seine, France from 1913 to 1923.
Roupeiro is a white Portuguese wine grape planted primarily in the Alentejo and Douro regions. In Alentejo, the grape is known as Alva. In the Douro, it is known as Codega. J. Robinson Jancis Robinson's Wine Course Third Edition pg 121 Abbeville Press 2003 ISBN 0789208830
An alvar is a biological environment based on a limestone plain with thin or no soil and, as a result, sparse vegetation. It is also known as a pavement barren although this term is also used for similar landforms based on sandstone.